1. Technical Overview

Blown Castor Oil, also referred to as Oxidized Castor Oil, is a specialized derivative produced by the controlled polymerization of refined castor oil through the introduction of air at elevated temperatures.² Unlike the parent oil, Blown Castor Oil features significantly higher viscosity, increased density, and enhanced pigment-wetting properties.³ During the “blowing” process, the double bonds in the ricinoleic chain undergo oxidative polymerization and cross-linking, creating complex molecular structures with higher molecular weights.⁴ In industrial R&D, it is primarily utilized as a non-migratory plasticizer, a high-tack lubricant additive, and a binder in printing inks and coatings where film durability is essential.

2. Chemical Structure & Composition

The chemical identity of Blown Castor Oil is defined by the degree of oxidation.

• Polymerized Triglycerides: The process creates intermolecular oxygen bridges (ether and peroxide linkages) between the fatty acid chains.

• Functional Groups: It retains its primary hydroxyl functionality while gaining hydroperoxide and carbonyl groups through oxidation.

• Molecular Weight: Significantly higher than standard castor oil, leading to its characteristic viscous nature.⁶

The resulting structure is highly polar, which ensures excellent adhesion to polar substrates and superior compatibility with a wide range of synthetic resins.

3. Physical & Chemical Properties

Blown Castor Oil is a heavy, viscous, transparent liquid with the following technical hallmarks:

• Viscosity: Highly customizable, ranging from 15 stokes to 100+ stokes at 25°C, depending on the blowing time.

• Color: Typically darker than refined oil, ranging from amber to deep brown (Gardner 5–9).

• Specific Gravity: Higher than refined castor oil, usually between 0.980 and 1.000.

• Acid Value: Tends to increase during the blowing process, typically ranging from 5 to 15 mg KOH/g.

• Solubility: Soluble in aromatic hydrocarbons, esters, and ketones; limited solubility in mineral oils without coupling agents.

4. Reaction Chemistry

The reactive nature of Blown Castor Oil stems from its oxidized structure:

1. Cross-linking: The remaining double bonds and hydroxyl groups can react with cross-linkers like isocyanates or amino resins to form tough, flexible films.⁷

2. Esterification: The increased acidity allows for targeted reactions in specialized resin synthesis.

3. Surfactant Synthesis: Can be further modified to create high-viscosity emulsifiers for oil-in-water systems.

5. When to Use vs. When NOT to Use

Use Blown Castor Oil when:

• You require a non-migratory plasticizer for nitrocellulose, especially in artificial leather or high-gloss lacquers.

• Formulating heavy-duty lubricants or “tackifiers” for open-gear systems.

• Manufacturing printing inks that require high gloss and superior rub resistance.

Do NOT use Blown Castor Oil when:

• The application requires a water-white or very light color (use PPG or FSG instead).

• Low-viscosity penetration is required (use Methyl Ricinoleate instead).

• The formulation is highly sensitive to acid value (unless neutralized during the process).

6. Compatibility Profile

Blown Castor Oil exhibits exceptional compatibility with:

• Polymers: Nitrocellulose (NC), Ethyl Cellulose, PVB, and chlorinated rubber.

• Resins: Shellac, Rosins, and Alkyds.

• Plasticizers: Synergistic when used with phthalate-free plasticizers to prevent migration and sweating.

7. Manufacturing Process (Product Focus)

Nova Industries utilizes a precision-controlled blowing process:

1. Heating: Refined castor oil is heated in a specialized reactor to temperatures between 80°C and 130°C.

2. Aeration: Compressed air is bubbled through the oil at a controlled rate.⁸

3. Oxidation Monitoring: The viscosity and acid value are monitored in real-time.

4. Quenching: The reaction is stopped abruptly once the target viscosity (e.g., Z2, Z5 on the Gardner-Holdt scale) is achieved to ensure batch-to-batch consistency.

8. Technical Specifications Table

Parameter	Specification (Standard Blown Grade)
Appearance	Amber to Brown, Clear Viscous Liquid
Viscosity (at 25°C)	15 – 50 Stokes (Customizable)
Acid Value (mg KOH/g)	5.0 – 15.0
Iodine Value (Wijs)	50 – 75 (Lower than refined oil)
Saponification Value	190 – 210
Hydroxyl Value	145 – 155
Color (Gardner)	9.0 Max
Specific Gravity (at 30°C)	0.985 – 0.995

9. Quality Grade Analysis

The primary indicator of quality in Blown Castor Oil is Viscosity Stability. Inferior blown oils often continue to polymerize in the drum, leading to “gelation” over time. Nova Industries uses specialized stabilization techniques to ensure that the viscosity remains constant throughout the shelf life of the product.⁹

10. Impact of Impurities

• Moisture: High moisture during the blowing process can lead to erratic acid values and poor clarity.

• Incomplete Oxidation: Results in an oil that acts like standard castor oil, which may migrate out of the polymer matrix in plasticizer applications.

11. Industry-Wise Application 1: Coatings & Lacquers

Blown Castor Oil is the industry standard plasticizer for Nitrocellulose (NC) Lacquers. It provides a “permanent” plasticity that does not evaporate or migrate, ensuring the coating remains flexible and crack-resistant for years.¹⁰ It is widely used in wood finishes and nail polishes.

12. Industry-Wise Application 2: Printing Inks

Used as a binder and pigment dispersant in lithographic and screen-printing inks.¹¹ Its high tack and viscosity improve the transfer of ink from the roller to the substrate and provide a high-gloss, durable finish.

13. Industry-Wise Application 3: Lubricants & Greases

Acts as a lubricity improver and tackifier in industrial lubricants.¹² It is particularly effective in “stay-put” lubricants for chains, open gears, and wire ropes where resistance to centrifugal slinging is required.

14. Industry-Wise Application 4: Caulks & Sealants

Incorporated into oil-based caulks and glazing compounds to provide flexibility and prevent the compound from becoming brittle over time.

15. Formulation Guide

• Dilution: If the viscosity is too high for handling, Blown Castor Oil can be thinned with aromatic solvents or esters before incorporation.

• Blending: For plasticizer use, typically 10–25% of the total resin weight is recommended, depending on the required flexibility.

16. Sustainability Data

Blown Castor Oil is 100% bio-based and renewable.¹³ It contains no volatile organic compounds (VOCs) and is a non-toxic alternative to petroleum-derived polymeric plasticizers.

17. Packaging & Logistics (Technical)

• Standard: 200kg New Steel or HDPE Drums.

• Bulk: 1000kg IBC Tanks.

• Storage Stability: Stable for 12 months; however, it should be kept in a cool area to prevent natural oxidative aging.

18. Storage Science

Due to its high viscosity, Blown Castor Oil can become difficult to pour at low temperatures. It is recommended to store drums in a warehouse maintained above 20°C. If the oil thickens due to cold, gentle warming (not exceeding 50°C) will restore its flow properties.

19. Troubleshooting Guide

• Problem: Haze in NC Lacquer. Solution: Ensure the solvent balance is correct; Blown Castor Oil requires sufficient active solvents (esters/ketones) for full integration.

• Problem: Unexpected viscosity increase in storage. Solution: Keep drums tightly sealed to prevent further atmospheric oxidation; avoid storage in direct sunlight.

20. Regulatory Compliance

Our Blown Castor Oil is REACH Compliant and meets the safety requirements for use in various industrial and consumer-facing applications globally.¹⁵

21. Safety (SDS Summary)

• Handling: Use standard industrial PPE. The oil is non-hazardous.

• Fire: Use foam or CO2 extinguishers. The high flash point (>280°C) makes it very safe against accidental ignition.

• Environment: Biodegradable; avoid large-scale spills into wastewater systems due to high viscosity.

22. Sample Validation Process

For procurement approval, we recommend testing the Viscosity and Acid Value. For plasticizer users, a “compatibility film test” with the target resin is recommended to verify that no migration occurs after 48 hours.

23. Commercial Efficiency

By sourcing stabilized Blown Castor Oil from Nova Industries, manufacturers eliminate the risk of “in-drum gelation.” This ensures that every drop of the material can be used in production without waste, reducing overall material costs.

24. Technical FAQs

1. What is the difference between Blown and Raw Castor Oil? Blown oil has a much higher viscosity and better non-migratory properties due to its polymerized structure.¹⁶

2. Does Blown Castor Oil yellow? It is naturally amber-colored; however, it has good color stability once incorporated into a cured film.

3. Can it be used in water-based systems? No, it is strictly for solvent-borne or 100% solid systems unless pre-emulsified.

25. Contact CTA

For Technical Data Sheets (TDS), specific viscosity targets (from 15 to 150 Stokes), or to request a sample, please contact our export department: export@novaind.in

1. Technical Overview

Methyl Ricinoleate (MR) is a methyl ester derived from the transesterification of refined castor oil.² Chemically known as methyl 12-hydroxy-9-octadecenoate (³$C_{19}H_{36}O_3$), it is a clear, low-viscosity liquid.⁴ Unlike the parent castor oil, Methyl Ricinoleate possesses a significantly lower molecular weight and reduced viscosity, which enhances its penetration and plasticizing efficiency. In industrial R&D, MR is valued for its trifunctionality—the ester group, the double bond, and the secondary hydroxyl group. This unique structure makes it a superior bio-based intermediate for specialized surfactants, cutting fluids, and high-performance plasticizers for various polymers.

2. Chemical Structure & Composition

Methyl Ricinoleate is the primary methyl ester found in the esterified profile of castor oil.

• Methyl Ricinoleate Content: Typically 85–90%.

• Secondary Components: Small percentages of Methyl Oleate, Methyl Linoleate, and Methyl Stearate.

• Molecular Architecture: A long 18-carbon chain with a hydroxyl group at C12 and a methoxy group at the carboxyl terminus.

The presence of the hydroxyl group provides higher polarity than standard fatty acid methyl esters (FAME), allowing MR to act as a powerful solvent and coupling agent in complex chemical systems.

3. Physical & Chemical Properties

• Appearance: Pale yellow to transparent, clear liquid.⁵

• Viscosity: ~0.3 to 0.5 stokes at 25°C (Significantly lower than castor oil).

• Solubility: Fully soluble in most organic solvents including alcohols, ketones, and hydrocarbons. Insoluble in water but easily emulsifiable.

• Refractive Index: 1.468 – 1.472 at 25°C.

• Pour Point: Remains liquid at low temperatures (approx. -10°C), offering better handling characteristics than the parent oil.

4. Reaction Chemistry

The versatility of MR stems from its three reactive sites:

1. The Methoxy Group: Allows for rapid transesterification with other alcohols to create specialized esters.

2. The Hydroxyl Group: Acts as a site for ethoxylation to produce non-ionic surfactants or for reaction with isocyanates to create polyurethane intermediates.

3. The Double Bond: Facilitates hydrogenation to produce Methyl 12-HSA or sulfonation for industrial wetting agents.

5. When to Use vs. When NOT to Use

Use Methyl Ricinoleate when:

• You require a bio-based, biodegradable plasticizer for nitrocellulose, ethyl cellulose, or vinyl resins.

• Formulating metalworking fluids that need superior lubricity and polar adhesion to metal surfaces.

• Synthesizing high-purity surfactants where low viscosity of the feedstock is required for process efficiency.

Do NOT use Methyl Ricinoleate when:

• The application requires high-temperature stability in an open system (above 150°C), as esters may undergo thermal degradation.

• A high-viscosity binder is required (use Castor Oil or DCO instead).

• The application is strictly aqueous and cannot accommodate the use of emulsifiers.

6. Compatibility Profile

MR exhibits excellent compatibility with:

• Polymers: PVC, PVB, Nitrocellulose, and various synthetic rubbers.

• Oils: Blends seamlessly with mineral oils, synthetic esters, and other vegetable oils.

• Resins: Highly compatible with alkyd and phenolic resins.⁶

7. Manufacturing Process (Product Focus)

Nova Industries produces MR through a high-efficiency transesterification process:

1. Reaction: Refined castor oil is reacted with anhydrous methanol in the presence of a specialized alkaline catalyst.

2. Glycerin Separation: The byproduct (glycerin) is separated using high-speed centrifuges.

3. Washing & Purification: The methyl ester phase is washed to remove residual catalyst and unreacted methanol.

4. Vacuum Distillation: The product is distilled under a high vacuum to remove heavy ends, ensuring a light color and high purity level.

8. Technical Specifications Table

Parameter	Specification (Methyl Ricinoleate)
Appearance	Pale Yellow to Colorless Clear Liquid
Acid Value (mg KOH/g)	2.0 Max
Iodine Value (Wijs)	80 – 90
Saponification Value	175 – 185
Hydroxyl Value	150 – 160
Moisture & Volatiles	0.20% Max
Color (Gardner)	2.0 Max
Specific Gravity (at 30°C)	0.915 – 0.925

9. Quality Grade Analysis

Nova Industries focuses on the Low Acid Value and Moisture Control. A high acid value in MR can lead to the degradation of sensitive polymers when used as a plasticizer. Our vacuum distillation ensures that unreacted fatty acids are removed, providing a chemically neutral product that enhances the shelf life of the final formulation.

10. Impact of Impurities

• Residual Methanol: Lowers the flash point and can cause odor issues in cosmetic or indoor coating applications.

• Unreacted Triglycerides: Increase the viscosity and can lead to “bleeding” or migration when MR is used as a plasticizer.

11. Industry-Wise Application 1: Plastics & Polymers

MR is a primary bio-plasticizer for nitrocellulose and ethyl cellulose.⁷ It provides excellent flexibility, low-temperature impact resistance, and high gloss to finished plastic products. Its polar nature ensures it stays within the polymer matrix better than non-polar plasticizers.

12. Industry-Wise Application 2: Metalworking Fluids

In the lubricant industry, MR is used in cutting and grinding oils.⁸ The hydroxyl group provides a strong affinity for metallic surfaces, creating a stable lubricating film that reduces friction and heat generation during high-speed machining.

13. Industry-Wise Application 3: Surfactants & Emulsifiers

Used as a feedstock for producing alkanolamides and ethoxylated surfactants. These derivatives are widely used in the textile, leather, and crop protection industries due to their high biodegradability.

14. Industry-Wise Application 4: Cosmetics & Personal Care

Acts as a non-greasy emollient and solvent in skin care products.⁹ It is often used as a carrier for pigments in decorative cosmetics, ensuring a smooth and even application.

15. Formulation Guide

• Incorporation: MR can be added directly to the solvent phase or the polymer melt.

• Emulsification: For water-based systems, use a non-ionic emulsifier with an HLB of 10–12 to create a stable emulsion.

16. Sustainability Data

Methyl Ricinoleate is 100% bio-based and renewable. It is classified as “Readily Biodegradable,” making it an environmentally responsible choice for applications where the product may eventually enter the ecosystem, such as in total-loss lubricants.

17. Packaging & Logistics (Technical)

• Standard: 190kg/200kg HDPE or Epoxy-lined MS Drums.

• Bulk: 1000kg IBC Tanks or ISO Tanks.

• Storage Stability: MR is stable for transport but should be protected from extreme heat to prevent oxidation of the double bond.

18. Storage Science

MR should be stored in a cool, dry area.¹⁰ Because it contains an unsaturated double bond, it is sensitive to atmospheric oxygen. For long-term storage, 316-grade stainless steel tanks with nitrogen blanketing are recommended to preserve the color and iodine value.

19. Troubleshooting Guide

• Problem: Darkening of the product during storage. Solution: Ensure the container is air-tight; check for iron contamination from mild steel storage.

• Problem: Migration or “oiling out” in plastics. Solution: This may indicate the presence of unreacted triglycerides; verify the viscosity of the MR batch.

20. Regulatory Compliance

Our Methyl Ricinoleate is REACH Compliant, meeting the stringent chemical safety standards for the European market. It is also listed on major global chemical inventories (TSCA, DSL, IECSC).

21. Safety (SDS Summary)

• Handling: Use standard protective equipment. MR is not classified as hazardous.

• Flash Point: High (>170°C), providing a wide safety margin in industrial processing.¹¹

• Environment: Non-toxic to aquatic life; however, large spills should be contained using absorbent materials.

22. Sample Validation Process

For laboratory approval, we recommend testing the Viscosity and Hydroxyl Value. For plasticizer applications, a compatibility test with the specific resin (checking for clarity and migration) is the most reliable validation method.

23. Commercial Efficiency

Direct procurement from Nova Industries ensures a product with a high methyl ester content and minimal residual methanol. This high purity leads to more efficient downstream chemical reactions and higher-quality final products, reducing overall manufacturing costs.

24. Technical FAQs

1. How is MR different from Castor Oil? MR has a much lower viscosity and molecular weight, making it a better solvent and a more efficient plasticizer than the parent oil.¹²

2. Is Methyl Ricinoleate biodegradable? Yes, it is derived from vegetable oil and is inherently biodegradable.¹³

3. Can it be used as a fuel additive? Yes, it provides excellent lubricity to diesel fuels, protecting fuel pumps and injectors from wear.¹⁴

25. Contact CTA

For Technical Data Sheets (TDS), customized purity levels, or bulk export pricing, please contact our technical sales department at: export@novaind.in

1. Technical Overview

Methyl 12-Hydroxy Stearate (Methyl 12-HSA or M12HSA) is a methyl ester derived from the esterification of 12-Hydroxy Stearic Acid or the transesterification of Hydrogenated Castor Oil.¹ It is a waxy, white solid at room temperature that melts into a low-viscosity liquid.² In industrial R&D, M12HSA is highly valued as a high-purity chemical intermediate. Compared to 12-HSA acid, the methyl ester version offers a lower melting point and superior solubility in organic phases, making it an ideal choice for the production of high-performance lithium complex greases, high-end cosmetics, and as a specialized lubricant in plastic processing.

2. Chemical Structure & Composition

M12HSA is the methyl ester of 12-hydroxystearic acid (³$C_{19}H_{38}O_3$).⁴ Its structure consists of a long 18-carbon saturated chain with a hydroxyl group at the C12 position and a methoxy group at the carboxyl end.

• Methyl 12-Hydroxystearate Content: Minimum 85-88%.

• Saturated Esters: Balanced distribution of methyl stearate and methyl palmitate.

• Functional Sites: Retains the secondary hydroxyl group for further chemical modifications.

The esterification of the carboxyl group reduces the molecular polarity compared to the free acid, allowing for better dispersion in non-polar hydrocarbon systems.

3. Physical & Chemical Properties

• Appearance: White to off-white waxy solid (flakes or blocks).⁵

• Melting Point: 48°C to 52°C (significantly lower than the 75°C of 12-HSA).

• Solubility: Excellent solubility in alcohols, esters, and aromatic hydrocarbons when heated. Insoluble in water.

• Acid Value: Very low (<5.0 mg KOH/g), indicating a near-complete conversion of the acid to the ester.

• Iodine Value: Low (<5.0), ensuring high oxidative and thermal stability.

4. Reaction Chemistry

The methyl ester group provides a strategic advantage in chemical processing:

1. Transesterification: Reacts efficiently with other alcohols or polyols to create specialized lubricants and emollients.

2. Saponification (Grease Cooking): In the production of lithium greases, M12HSA reacts with lithium hydroxide. The release of methanol (instead of water) during this reaction allows for faster “de-watering” and more efficient soap fiber formation.

3. Hydroxyl Modification: The C12 hydroxyl group can be further reacted with isocyanates to produce specialized polyurethane additives.

5. When to Use vs. When NOT to Use

Use Methyl 12HSA when:

• Manufacturing high-performance lubricants where a low-acid, high-purity intermediate is required.

• Formulating cosmetic “sticks” or creams that require a waxy component with a melting point near body temperature.

• Producing specialized plastic additives that require an ester-based internal lubricant.

Do NOT use Methyl 12HSA when:

• The process cannot accommodate the release of methanol (the byproduct of saponification).

• A high-viscosity “acid-thickened” system is required (use 12-HSA instead).

• The application requires a liquid at room temperature (use Ricinoleic acid or Castor Oil instead).

6. Compatibility Profile

M12HSA exhibits excellent compatibility with:

• Waxes: Paraffin, Microcrystalline, and Carnauba waxes.

• Oils: Mineral oils, PAO, and synthetic esters.

• Polymers: PVC, Polystyrene, and various elastomers.

7. Manufacturing Process (Product Focus)

The production of M12HSA at Nova Industries involves:

1. Esterification: Reacting high-purity 12-HSA with methanol in the presence of an acid catalyst.⁶

2. Refining: Multi-stage washing to remove residual catalyst and unreacted methanol.

3. Vacuum Distillation: Advanced distillation ensures the removal of heavy ends and color-causing impurities.

4. Solidification: The molten ester is cooled and flaked for easy handling and dosing.

8. Technical Specifications Table

Parameter	Specification (Methyl 12-HSA)
Appearance	White to Off-White Waxy Flakes
Melting Point (°C)	48 – 52°C
Acid Value (mg KOH/g)	5.0 Max
Iodine Value (g I2/100g)	5.0 Max
Saponification Value	175 – 185
Hydroxyl Value	150 – 160
Color (Gardner)	2.0 Max

9. Quality Grade Analysis

Nova Industries monitors the Acid Value and Hydroxyl Value as critical quality markers. A high acid value indicates incomplete esterification, which can interfere with the performance of M12HSA in sensitive cosmetic formulations or high-end lubricants. Our vacuum distillation process ensures a consistently low acid value and a very light color.

10. Impact of Impurities

• Residual Methanol: If present, it poses a safety risk due to a lowered flash point and can cause odor issues.

• Unreacted 12-HSA: Can cause the melting point to be inconsistent and affect the solubility of the product in oil phases.

11. Industry-Wise Application 1: Lubricant Greases

M12HSA is a premium alternative to 12-HSA for Lithium Complex Greases. Because it is a methyl ester, the saponification reaction is more controlled and the resulting soap fibers are often finer, leading to greases with improved mechanical stability and better low-temperature performance.

12. Industry-Wise Application 2: Cosmetics & Personal Care

In lipsticks, deodorants, and skin creams, M12HSA acts as an emollient and structural agent. Its melting point (near 50°C) allows it to provide a smooth “glide” upon application while maintaining the stick’s integrity at room temperature.

13. Industry-Wise Application 3: Plastics & Polymers

Used as an internal lubricant and mold release agent for engineering plastics. It improves the surface gloss and reduces the friction of the polymer melt during processing.

14. Industry-Wise Application 4: Chemical Intermediates

A building block for the synthesis of various specialized surfactants, amides, and esters used in the textile and leather industries.

15. Formulation Guide

• Grease Cooking: When reacting M12HSA with Lithium Hydroxide, ensure the reaction vessel is equipped with a condenser to safely capture and recover the released methanol.

• Cosmetic Blending: Melt M12HSA with other waxes and oils at ~60°C to ensure a homogenous phase before cooling.

16. Sustainability Data

Methyl 12-HSA is a bio-based product derived from renewable castor oil.⁷ It offers a high degree of biodegradability and helps manufacturers increase the renewable carbon content of their final products.

17. Packaging & Logistics (Technical)

• Standard: 25kg Paper/HDPE Bags with moisture-proof liners.

• Bulk: 500kg or 1000kg Jumbo Bags.

• Logistics: Classified as non-hazardous for transport. Due to its 50°C melting point, it should be kept away from high-heat areas to prevent “caking.”

18. Storage Science

M12HSA should be stored in a cool, dry environment.⁸ While stable, it can undergo minor hydrolysis if exposed to moisture for extended periods, which would increase the acid value. Stainless steel or epoxy-lined containers are recommended for handling the molten material.

19. Troubleshooting Guide

• Problem: Clumping of flakes in the bag. Solution: Store in a temperature-controlled warehouse below 35°C; ensure bags are not stacked too high.

• Problem: Inconsistent grease consistency. Solution: Verify the saponification value of the M12HSA batch to ensure the alkali dosage is correct.

20. Regulatory Compliance

Our M12HSA is REACH Compliant and produced under strict ISO-aware manufacturing standards, making it suitable for global export to highly regulated markets.

21. Safety (SDS Summary)

• Handling: Wear gloves and safety glasses.¹⁰ Avoid inhaling dust during flake handling.

• Fire: Use CO2, dry chemical, or foam extinguishers.

• Methanol Safety: If used in a closed reactor, ensure the system is grounded to prevent static discharge during methanol release.

22. Sample Validation Process

For procurement validation, we recommend testing the Melting Point and Acid Value. A lab-scale solubility test in the customer’s specific base oil is the most effective way to confirm compatibility.

23. Commercial Efficiency

By using high-purity M12HSA from Nova Industries, manufacturers can optimize their production cycles. The low acid value and high hydroxyl consistency ensure that batch-to-batch adjustments are minimized, leading to more predictable manufacturing costs.

24. Technical FAQs

1. What is the benefit of using M12HSA over 12-HSA? M12HSA has a lower melting point and better solubility in oils, which can simplify the manufacturing process for certain greases and cosmetics.¹¹

2. Is M12HSA biodegradable? Yes, it is derived from vegetable oil and is inherently biodegradable.

3. Can it be used in food-contact applications? In many regions, castor derivatives are approved for indirect food contact; please check specific local regulations.

25. Contact CTA

For Technical Data Sheets (TDS), customized specifications, or to request a sample, please contact our export department: export@novaind.in

1. Technical Overview

Dehydrated Castor Oil Fatty Acid (DCOFA) is a liquid polyunsaturated fatty acid produced through the hydrolysis of Dehydrated Castor Oil (DCO).¹ It is distinguished by its high content of conjugated linoleic acid isomers ($9,11$-octadecadienoic acid). Unlike standard fatty acids, DCOFA offers exceptional drying properties and a high degree of cross-linking. In industrial chemistry, DCOFA is the premium choice for synthesizing high-solids alkyd resins, epoxy esters, and specialized surfactants where rapid oxidative drying, film hardness, and non-yellowing characteristics are mandatory requirements.

2. Chemical Structure & Composition

The molecular profile of DCOFA is defined by the removal of the hydroxyl group from the original ricinoleic chain to create a system of conjugated and non-conjugated double bonds.²

• Conjugated Linoleic Acid ($9,11$-isomer): Typically 25%–30%, providing the primary drying speed.

• Non-Conjugated Linoleic Acid ($9,12$-isomer): Provides film flexibility and adhesion.

• Saturated Fatty Acids: Minimal presence to ensure the product remains liquid at low temperatures.

The presence of these double bonds allows for rapid polymerization via a free-radical mechanism when exposed to oxygen, creating a dense, durable molecular network.

3. Physical & Chemical Properties

DCOFA is a clear, light-colored liquid with high reactivity:³

• Appearance: Pale yellow to transparent liquid.⁴

• Viscosity: Low viscosity at room temperature, facilitating easy pumping and mixing.

• Titer: Low solidification point, ensuring the material remains liquid even in cooler warehouse conditions.

• Acid Value: High (190–200 mg KOH/g), facilitating rapid and complete esterification reactions.⁵

• Iodine Value: 135–155, indicating high unsaturation and drying potential.

4. Reaction Chemistry

DCOFA is a highly functional building block for synthetic chemists:

1. Esterification: Reacts with polyols (pentaerythritol, glycerin) to form high-performance alkyd binders.

2. Epoxidation: Can be reacted with epichlorohydrin to create epoxy esters for automotive primers.⁶

3. Maleinization: Reacts with maleic anhydride to produce water-reducible resins.

4. Diels-Alder Reaction: The conjugated system allows for easy modification with various monomers to enhance resin hardness.

5. When to Use vs. When NOT to Use

Use DCOFA when:

• Manufacturing high-quality white industrial enamels that must resist yellowing.

• Producing air-drying or stoving finishes requiring high gloss and chemical resistance.

• Formulating high-performance printing ink vehicles.

Do NOT use DCOFA when:

• The application requires a non-drying fatty acid (use Ricinoleic Acid or Stearic Acid instead).

• Cost is the only factor and yellowing is acceptable (standard Linseed fatty acids are more economical).

6. Compatibility Profile

DCOFA exhibits excellent compatibility with:

• Resins: Acrylics, phenolics, and various amino resins.

• Solvents: Fully soluble in aromatic hydrocarbons, esters, and ketones.

• Cross-linkers: Highly compatible with melamine and isocyanate curing agents.

7. Manufacturing Process (Product Focus)

The production of DCOFA at Nova Industries involves:

1. Dehydration: First, refined castor oil is dehydrated under vacuum and high temperature to create DCO.

2. Hydrolysis (Splitting): The DCO is then subjected to high-pressure steam splitting to separate the fatty acids from the glycerin.

3. Distillation: The resulting fatty acid is vacuum distilled to concentrate the ⁷$9,11$ and ⁸$9,12$ isomers and remove any residual impurities or heavy fractions.⁹

4. Stabilization: Trace amounts of antioxidants may be added to ensure the high iodine value remains stable during transit.

8. Technical Specifications Table

Parameter	Specification (DCOFA)
Appearance	Pale Yellow Liquid
Color (Gardner)	3.0 Max
Acid Value (mg KOH/g)	190 – 200
Iodine Value (Wijs)	135 – 155
Saponification Value	195 – 205
Moisture & Volatiles	0.5% Max
Conjugated Diene Content	25% – 30%

9. Quality Grade Analysis

Nova Industries monitors the Conjugated Diene Content as the ultimate indicator of quality. A higher conjugation percentage directly translates to faster drying times for the customer. Inferior DCOFA often has a conjugation level below 20%, leading to “soft” films that are prone to picking up dust during the drying phase.

10. Impact of Impurities

• Residual Hydroxyls: Indicate incomplete dehydration; they will slow down the drying speed and reduce the water resistance of the final coating.

• High Unsaponifiables: Can lead to a reduction in film gloss and integrity over time.

11. Industry-Wise Application 1: Industrial Coatings

DCOFA is the gold standard for high-performance industrial paints. It provides a unique combination of rapid drying, excellent adhesion to metal, and superior resistance to oils and grease.

12. Industry-Wise Application 2: Printing Inks

In the ink industry, DCOFA is used to produce quick-drying varnishes for offset and lithographic inks. Its high iodine value ensures the ink “sets” quickly on the substrate without smudging.

13. Industry-Wise Application 3: Automotive Primers

Epoxy esters made with DCOFA are widely used in automotive undercoats and industrial primers due to their exceptional corrosion resistance and flexibility.

14. Industry-Wise Application 4: Specialty Surfactants

Used as a raw material for biodegradable surfactants and emulsifiers that require a polyunsaturated hydrophobic tail.

15. Formulation Guide

• Esterification: During resin cooking, maintain a nitrogen blanket to preserve the light color of the DCOFA.

• Drier Selection: Use a combination of Cobalt and Zirconium driers to achieve an optimal balance of surface and through-drying.

16. Sustainability Data

DCOFA is a 100% bio-based fatty acid. It offers a sustainable alternative to petroleum-based monomers in resin synthesis and contributes significantly to the “Green Carbon” content of industrial coatings.

17. Packaging & Logistics (Technical)

• Standard: 190kg/200kg HDPE or Epoxy-lined MS Drums.

• Bulk: ISO Tanks or 1000kg IBC Tanks.

• Logistics: DCOFA is a non-hazardous liquid, but should be handled with care to avoid spills due to its high iodine value (reactivity with air).

18. Storage Science

DCOFA is a highly reactive, unsaturated fatty acid.¹⁰ It must be stored in a cool, dry place away from direct sunlight. To prevent “skinning” or polymerization inside the drum, containers should be kept tightly sealed. For bulk storage, 316-grade stainless steel tanks with nitrogen blanketing are essential.

19. Troubleshooting Guide

• Problem: Resin batch turns dark. Solution: Check for trace iron contamination or insufficient nitrogen flow during the cooking process.

• Problem: Poor drying in high humidity. Solution: Increase the dosage of the auxiliary drier (Zirconium) or check the conjugation level of the DCOFA batch.

20. Regulatory Compliance

Our DCOFA is REACH Compliant, ensuring it meets the environmental and safety standards required for the European and Global markets.

21. Safety (SDS Summary)

• Handling: Wear protective gloves and eye protection.

• Spontaneous Combustion: Rags or filter aids soaked with DCOFA can catch fire spontaneously. Always store these in water-filled metal containers.

• Fire: Use dry chemical, CO2, or foam extinguishers.

22. Sample Validation Process

For laboratory trials, we recommend a Gas Chromatography (GC) Analysis to verify the fatty acid distribution and conjugation percentage. A laboratory-scale resin cook is the best way to validate performance in your specific formulation.

23. Commercial Efficiency

Direct sourcing of DCOFA from Nova Industries ensures a high-purity product with consistent conjugation. This consistency allows resin manufacturers to standardize their cooking cycles, leading to higher factory efficiency and fewer batch corrections.

24. Technical FAQs

1. What is the difference between DCO and DCOFA? DCO is the triglyceride (oil), while DCOFA is the free fatty acid. DCOFA is used when the formulation requires a direct reaction with other polyols or epoxy groups.

2. Is DCOFA non-yellowing? Yes, compared to Linseed or Soybean fatty acids, DCOFA is significantly better at resisting yellowing in white enamels.

3. Does DCOFA have a strong odor? It has a characteristic fatty odor, but our distillation process ensures it is neutral enough for high-end industrial applications.

25. Contact CTA

For Technical Data Sheets (TDS) or specific conjugation requirements, please contact our technical sales team at: export@novaind.in

1. Technical Overview

Commercial Grade Castor Oil (CCO), often referred to as Industrial Grade Castor Oil, is a cost-effective triglyceride obtained from a combination of the second pressing of castor seeds and solvent extraction of the remaining oil cake. While it contains the same high level of Ricinoleic acid (approx. 90%) as refined grades, it possesses a higher acidity and a darker color profile. In industrial R&D, CCO is the primary choice for applications where the final product’s color is not a critical parameter, such as in heavy-duty lubricants, textile chemicals, and as a raw material for sulfonated oils.

2. Chemical Structure & Composition

The chemical backbone of CCO is identical to refined castor oil, consisting primarily of the triglyceride of 12-hydroxy-9-octadecenoic acid.

• Ricinoleic Acid (~88-90%): The defining functional fatty acid.

• Free Fatty Acids (FFA): Higher concentration compared to FSG, typically reflected in a higher acid value.

• Minor Components: Contains trace amounts of oleic, linoleic, and stearic acids.

The presence of the hydroxyl group on the 12th carbon remains the key functional site for chemical reactions, making CCO a highly reactive bio-polyol despite its industrial purity level.²

 

3. Physical & Chemical Properties

CCO is a viscous, dark-colored liquid with distinct industrial properties:

• Appearance: Deep yellow to brownish-yellow liquid.

• Viscosity: ~6.5 to 8.5 stokes at 25°C, providing excellent film-forming and lubricating capabilities.³

   

• Specific Gravity: 0.950 – 0.965 at 30°C.

• Flash Point: High thermal stability (>250°C), making it suitable for high-heat industrial processes.

• Solubility: Soluble in alcohols and organic solvents; insoluble in water.⁴

   

4. Reaction Chemistry

CCO is highly versatile in industrial reactors:

1. Sulfonation: Reacts with sulfuric acid to produce Turkey Red Oil (Sulfonated Castor Oil), a vital wetting agent.⁵

    

2. Saponification: Reacts with alkalis to produce industrial soaps and metallic stearates used in grease manufacturing.⁶

    

3. Hydrolysis: Can be split into industrial-grade Ricinoleic acid and glycerin.

5. When to Use vs. When NOT to Use

Use CCO when:

• Producing Turkey Red Oil (Sulfonated Castor Oil) for the textile or leather industry.

• Manufacturing low-cost industrial lubricants, hydraulic fluids, or additives.⁷

   

• Formulating darker-colored alkyd resins or primers where aesthetics are secondary to performance.

Do NOT use CCO when:

• The application requires a “water-white” or pale yellow finish (use FSG or PPG instead).

• The process involves sensitive catalysts that could be deactivated by the higher acid content.

• The final product is intended for pharmaceutical or direct cosmetic use.

6. Compatibility Profile

CCO shows excellent synergy with:

• Oils: Readily blends with other vegetable oils and certain mineral oils.

• Resins: High compatibility with phenolic and rosin-based resins.

• Additives: Acts as an effective carrier for anti-foaming agents and industrial surfactants.

7. Manufacturing Process (Product Focus)

The production of CCO at Nova Industries involves:

1. Extraction: Combining the second mechanical pressing with solvent extraction of the castor cake.

2. Solvent Recovery: Ensuring complete removal of extraction solvents (like hexane) to maintain safe flash points.

3. Filtration: Multi-stage filtration to remove any solid impurities or seed meal residues.

4. Quality Standardization: Adjusting the batch to meet the standard commercial acid value and iodine value parameters.

8. Technical Specifications Table

Parameter	Specification (Commercial Grade)
Appearance	Yellow to Brownish Yellow, Viscous Liquid
Acid Value (mg KOH/g)	10.0 Max
Iodine Value (Wijs)	80 – 90
Saponification Value	175 – 185
Hydroxyl Value	155 Min
Moisture & Volatiles	0.50% Max
Insoluble Impurities	0.05% Max
Color Lovibond (5.25″ Cell)	Yellow 50 / Red 10.0 Max

9. Quality Grade Analysis

The primary differentiator for CCO is its Acid Value and Color. While FSG has an acid value of 2.0, CCO allows up to 10.0. This makes CCO significantly more economical for large-scale industrial use where the acidity does not interfere with the chemical process.

10. Impact of Impurities

• High Free Fatty Acids (FFA): While acceptable in CCO, excessively high FFA can lead to increased corrosion in metal storage tanks if not monitored.

• Insoluble Impurities: Nova Industries maintains a strict 0.05% limit to prevent the clogging of industrial sprayers or filtration units in downstream processing.

11. Industry-Wise Application 1: Textile & Leather

CCO is the most common raw material for Turkey Red Oil (TRO). Its high ricinoleic content provides the necessary wetting, emulsifying, and dispersing properties required for dyeing and finishing cotton and leather products.⁸

 

12. Industry-Wise Application 2: Industrial Lubricants

Used in the manufacturing of heavy-duty greases, brake fluids, and hydraulic fluids. The high viscosity and inherent lubricity of castor oil make it superior to many mineral-based alternatives in high-load conditions.⁹

 

13. Industry-Wise Application 3: Surface Coatings

Used in industrial-grade primers, anti-corrosive paints, and bitumen-based coatings where the darker oil color does not affect the final performance.

14. Industry-Wise Application 4: Rubber & Plastics

Acts as a processing aid and secondary plasticizer in the compounding of natural and synthetic rubbers, improving the flow and elasticity of the final product.¹⁰

 

15. Formulation Guide

• Neutralization: When using CCO in soaps, ensure the alkali dosage accounts for the higher acid value compared to refined grades.

• Heating: CCO can be safely heated for industrial mixing, but ensure adequate ventilation to manage the characteristic fatty odor.

16. Sustainability Data

Commercial Grade Castor Oil is 100% bio-based and renewable. It provides a sustainable, biodegradable alternative to petroleum-derived industrial fluids, helping companies reduce their environmental footprint.¹¹

 

17. Packaging & Logistics (Technical)

• Standard: 200kg New or Reconditioned Steel Drums.

• Bulk: 20MT Flexibags or ISO Tanks for cost-efficient global logistics.

• Transport: Classified as non-hazardous for sea and road transport.

18. Storage Science

CCO should be stored in a cool, dry place. Due to its higher acidity, it is more prone to minor oxidation over time if exposed to air. For bulk storage, carbon steel tanks are generally acceptable, but periodic testing of the acid value is recommended to monitor stability.

19. Troubleshooting Guide

• Problem: Excessive foaming in sulfonated oil production. Solution: Check the moisture content of the CCO; high moisture can cause violent reactions during sulfonation.

• Problem: Sedimentation in drums. Solution: This is common in vegetable oils at low temperatures; gently heat the drum to 30-40°C to homogenize the oil.

20. Regulatory Compliance

Our CCO is REACH Compliant and produced under strict quality control measures to ensure consistency across export shipments.

21. Safety (SDS Summary)

• Handling: Use standard industrial PPE. Avoid prolonged skin contact.

• Fire: Extinguish using foam, CO2, or dry chemical.

• Environment: Biodegradable, but large spills should be contained to prevent contamination of water systems.¹²

   

22. Sample Validation Process

For industrial procurement, we recommend validating the Acid Value and Hydroxyl Value. These two parameters are the most critical for ensuring the oil will react correctly in your specific industrial application.

23. Commercial Efficiency

By choosing Nova Industries’ CCO, manufacturers benefit from a stable supply of a high-ricinoleic oil at a competitive price point. The consistency in our extraction process ensures that you do not have to frequently adjust your chemical dosages between batches.

24. Technical FAQs

1. Does CCO contain hexane? No, our advanced solvent recovery system ensures that any residual solvents are removed to trace levels, well within safety standards.

2. Can CCO be used to make biodiesel? Yes, it is a viable feedstock for high-viscosity bio-fuels, though it requires specific transesterification parameters.

3. How long can CCO be stored? In a sealed container, CCO remains stable for 12 months.

25. Contact CTA

For detailed Technical Data Sheets (TDS), pricing for bulk container loads, or to request a sample of our Commercial Grade, please contact us at: export@novaind.in

1. Technical Overview

First Pressed Degummed (FPD) Castor Oil is an industrial-grade triglyceride extracted through the initial mechanical pressing of castor seeds, followed by a specialized degumming process. While standard crude oil contains phospholipids (gums) that can interfere with chemical stability and downstream processing, FPD is treated to remove these phosphatides. This ensures a cleaner oil with lower phosphorus content. In technical applications, FPD serves as the primary feedstock for manufacturing high-quality castor derivatives where the presence of gums would otherwise cause equipment fouling or inconsistent chemical reactions.

2. Chemical Structure & Composition

The structure of FPD remains centered around the triglyceride of Ricinoleic acid, but it is chemically distinguished by its refined lipid profile:

• Ricinoleic Acid (~89-91%): Main functional component.

• Low Phosphorus Content: Reduced from crude levels to <10 ppm through degumming.

• Minor Fatty Acids: Includes balanced levels of dihydroxystearic and palmitic acids.

The removal of gums (primarily lecithin and cephalin) stabilizes the oil against moisture-induced precipitation and “sludge” formation during long-term storage or heating cycles.

3. Physical & Chemical Properties

FPD is a viscous, clear liquid with enhanced stability parameters:

• Appearance: Transparent with a brownish-yellow tint.

• Viscosity: 6.5 to 8.5 stokes at 25°C.

• Flash Point: High thermal stability (>280°C), making it safe for high-temperature industrial environments.

• Hydroxyl Value: 160 Min, ensuring high cross-linking potential for polymer synthesis.

• Solubility: Fully soluble in ethanol and ether; insoluble in water.

4. Reaction Chemistry

The clean profile of FPD allows for efficient chemical transformations:

1. Direct Hydrogenation: Used as a base for producing Hydrogenated Castor Oil (HCO) where low phosphorus prevents catalyst poisoning.

2. Transesterification: Ideal for producing methyl ricinoleate and other bio-esters.

3. Polymerization: Acts as a bio-polyol in the synthesis of polyester resins and polyurethane systems where clarity is secondary to structural integrity.

5. When to Use vs. When NOT to Use

Use FPD when:

• Manufacturing castor derivatives like 12-HSA or Sebacic Acid.

• Formulating industrial lubricants that require high lubricity without the risk of gum deposits.

• Sourcing a cost-effective, first-press oil for applications where the “Pale” color of PPG is not required.

Do NOT use FPD when:

• The final product is a white enamel or a water-white clear coat (use PPG or FSG instead).

• The application is for pharmaceutical or cosmetic use requiring a USP/BP grade oil.

6. Compatibility Profile

FPD shows high compatibility with:

• Resins: Excellent integration with phenolic, alkyd, and epoxy resins.

• Solvents: Compatible with aromatic hydrocarbons and chlorinated solvents.

• Natural Fats: Blends seamlessly with other vegetable oils to modify viscosity or cost profiles.

7. Manufacturing Process (Product Focus)

The manufacturing of FPD at Nova Industries involves a two-stage process:

1. Mechanical Extraction: High-quality seeds are subjected to the first pressing to obtain the purest crude fraction.

2. Degumming (Hydration): The crude oil is treated with a controlled amount of water or dilute acid to hydrate the phospholipids.

3. Centrifugation: The hydrated gums are separated from the oil using high-speed centrifuges.

4. Vacuum Drying: Any residual moisture is removed under vacuum to ensure the oil meets export-grade moisture specifications (<0.25%).

8. Technical Specifications Table

Parameter	Specification (FPD Grade)
Appearance	Clear & Bright (Slightly Brownish-Yellow)
Acid Value (mg KOH/g)	3.0 Max
Iodine Value (Wijs)	82 – 90
Saponification Value	176 – 187
Hydroxyl Value	160 Min
Moisture & Volatiles	0.25% Max
Color (Lovibond 5.25″ Cell)	Yellow 30 / Red 3.0 Max
Insoluble Impurities	0.02% Max

9. Quality Grade Analysis

FPD is technically superior to “Commercial Grade” castor oil because of the First Pressing and the Degumming step. Commercial grade often includes solvent-extracted oil and contains higher levels of gums. FPD’s low insoluble impurity level (0.02% max) ensures it can be pumped through fine filters without clogging, a critical requirement for automated chemical plants.

10. Impact of Impurities

• Phosphatides: If not removed, gums can cause “livering” in resins and produce a foul odor during high-temperature reactions.

• High Moisture: Promotes the development of Free Fatty Acids (FFA), which lowers the flash point and increases corrosivity.

11. Industry-Wise Application 1: Chemical Derivatives

FPD is the global standard feedstock for the production of 12-Hydroxystearic Acid (12-HSA) and Hydrogenated Castor Oil (HCO). Its consistent purity ensures that the hydrogenation catalysts remain active for longer periods.

12. Industry-Wise Application 2: Industrial Lubricants

Used as a base oil for heavy-duty gear oils and hydraulic fluids. The degummed nature of the oil prevents the formation of “varnish” or deposits on high-speed moving parts.

13. Industry-Wise Application 3: Surface Coatings

Used in the manufacture of medium and long-oil alkyd resins for industrial primers and wood finishes where a slightly darker color is acceptable.

14. Industry-Wise Application 4: Urethane Systems

Serves as a bio-polyol for industrial floor coatings and sealants, providing excellent water resistance and flexibility to the cured system.

15. Formulation Guide

• Mixing: FPD should be introduced to the kettle under constant agitation.

• Temperature Control: For esterification, FPD can be heated safely up to 200°C; however, for higher temperatures, an inert gas blanket is recommended to prevent oxidative darkening.

16. Sustainability Data

FPD Castor Oil is a 100% bio-based, renewable product. By utilizing the first mechanical pressing and avoiding excessive chemical solvents, the environmental impact of its production is significantly lower than that of solvent-extracted oils or synthetic alternatives.

17. Packaging & Logistics (Technical)

• Standard: 200kg New Steel or HDPE Drums.

• Bulk: 20MT Flexibags or ISO Tanks.

• Storage Stability: Due to the degumming process, FPD has superior storage stability compared to crude castor oil.

18. Storage Science

FPD should be stored in a dry, cool area. While it is stable, it should be protected from moisture ingress, which can trigger the hydrolysis of triglycerides into free fatty acids. For bulk storage, carbon steel tanks are acceptable, but epoxy-coated or stainless steel tanks are preferred for long-term purity.

19. Troubleshooting Guide

• Problem: Haze or “cloud” at low temperatures. Solution: This is typical for FPD; gently warming the oil to 35°C will restore clarity.

• Problem: Reduced yield in derivative manufacturing. Solution: Check the hydroxyl value; ensure the moisture content has not increased during storage.

20. Regulatory Compliance

Our FPD is REACH Compliant and meets all standard GHS safety criteria for international transport and industrial handling.

21. Safety (SDS Summary)

• Fire: Not a flammable liquid, but will burn if pre-heated to very high temperatures.

• Spills: Use sand or sawdust to absorb. FPD is slippery and must be cleaned promptly from workshop floors.

• Health: Low toxicity; however, ingestion should be avoided.

22. Sample Validation Process

For laboratory validation, we recommend testing for Insoluble Impurities and Acid Value. A simple “Heat Test” (heating a sample to 150°C for 30 minutes) can be used to verify that no gums or moisture-induced precipitates appear.

23. Commercial Efficiency

By selecting FPD over crude or commercial grades, manufacturers reduce the risk of “batch failure” caused by impurity-related side reactions. This leads to higher-quality finished derivatives and lower maintenance costs for filtration systems.

24. Technical FAQs

1. Is FPD the same as Refined Castor Oil? FPD is a “semi-refined” oil; it has been degummed but not fully bleached to the level of FSG.

2. Can FPD be used in soap making? Yes, it is an excellent choice for industrial soaps where its high ricinoleic content provides superior lather and solubility.

3. Does FPD contain solvent residues? No, Nova Industries’ FPD is obtained strictly through mechanical pressing.

25. Contact CTA

For Technical Data Sheets (TDS), safety protocols, or bulk export inquiries, please contact our technical sales team at: export@novaind.in

1. Technical Overview

Pale Pressed Grade (PPG) Castor Oil is a premium, high-purity triglyceride produced by the initial pressing of top-quality castor seeds.² Unlike standard commercial or industrial grades, PPG is distinguished by its extremely light color and significantly lower acidity and impurity levels.³ Chemically, it is defined by a high concentration of Ricinoleic acid (approx. 90%), which provides a unique secondary hydroxyl group. In high-precision industrial applications, PPG is the preferred choice where color stability and chemical neutrality are critical to the final formulation’s integrity.

2. Chemical Structure & Composition

The molecular architecture of PPG is characterized by a high degree of uniformity. As it is derived from the first pressing, it contains the highest concentration of pure triglycerides.

• Ricinoleic Acid (~90%): The primary source of functionality.⁴

• Low Free Fatty Acids (FFA): Minimal chain degradation ensures a stable pH.

• Phospholipid Profile: Negligible levels of gums and phosphatides compared to solvent-extracted grades.

The absence of oxidation products in the first-press stage ensures that the double bonds in the carbon chain remain intact, providing predictable reactivity for downstream synthesis.

3. Physical & Chemical Properties

PPG is a clear, viscous liquid with the following technical benchmarks:

• Color: Significantly lighter than FSG (First Special Grade), usually characterized as a pale straw color.⁵

• Viscosity: ~7.0 to 9.0 stokes at 25°C.

• Hydroxyl Value: 160 min, indicating high reactivity for polyurethane and esterification reactions.

• Moisture Content: Strictly controlled below 0.20% to prevent hydrolysis.

• Refractive Index: 1.477 to 1.481 at 25°C.⁶

4. Reaction Chemistry

Due to its superior purity, PPG reacts more predictably in a reactor:

1. Urethane Synthesis: The hydroxyl groups react with isocyanates to form high-clarity elastomers.

2. Esterification: Reacts with organic acids to produce high-purity esters with minimal byproduct formation.

3. Ethoxylation: Its clean profile allows for the production of light-colored non-ionic surfactants used in the pharmaceutical and cosmetic industries.

5. When to Use vs. When NOT to Use

Use PPG when:

• Formulating “Water-White” or clear coatings where the slightest yellow tint is a failure.

• Manufacturing pharmaceutical intermediates or topical ointments.

• Producing high-performance lubricants for food-grade machinery or sensitive instrumentation.

Do NOT use PPG when:

• The application is a standard industrial lubricant where color and low acid value are not critical (Commercial Grade is more cost-effective).

• The oil will be subjected to crude industrial processes like sulfonation for textile use, where the extra purity of PPG provides no functional benefit.

6. Compatibility Profile

PPG exhibits excellent synergy with:

• Natural Polymers: Shellac, rosin, and vegetable waxes.

• Synthetic Resins: Polyurethanes, epoxies, and polyamides.

• Solvents: Fully soluble in isopropyl alcohol, ethyl acetate, and aromatic hydrocarbons.

7. Manufacturing Process (Product Focus)

The production of PPG at Nova Industries is a mechanical extraction process:

1. Seed Selection: Only the brightest, most mature seeds from North Gujarat are selected.

2. Pale Pressing: Seeds are subjected to the first round of mechanical pressing without the use of chemical solvents.⁷

3. Refining: The oil undergoes a specialized bleaching process using activated earth to remove any trace organic pigments.⁸

4. De-moisturization: High-vacuum drying ensures that moisture levels are kept at a minimum to preserve the shelf life and performance.

8. Technical Specifications Table

Parameter	Specification (Pale Pressed Grade)
Appearance	Pale Yellow, Clear & Bright
Acid Value (mg KOH/g)	1.0 Max
Iodine Value (Wijs)	82 – 90
Saponification Value	176 – 187
Hydroxyl Value	160 – 168
Moisture & Volatiles	0.20% Max
Color (Lovibond 5.25″ Cell)	Yellow 15 / Red 1.5 Max
Relative Density (at 30°C)9	0.954 – 0.96010

9. Quality Grade Analysis

The primary differentiator for PPG is the Acid Value. While First Special Grade (FSG) allows for an Acid Value of up to 2.0, Nova Industries’ PPG is capped at 1.0. This lower acidity significantly reduces the risk of corrosion in metallic systems and prevents the premature gelation of sensitive resins.

10. Impact of Impurities

• Trace Metals: Higher grades like PPG must have minimal iron and copper content to prevent the darkening of finished products.

• Peroxide Value: Low peroxide values in PPG indicate that the oil has not begun the oxidation process, ensuring better storage stability for the customer.¹¹

11. Industry-Wise Application 1: Pharmaceuticals

PPG is used as a vehicle for drug delivery and as a starting material for various therapeutic derivatives. Its high purity ensures it does not interact negatively with active pharmaceutical ingredients (APIs).

12. Industry-Wise Application 2: Cosmetics & Personal Care

In high-end lipsticks, shampoos, and hair oils, PPG provides superior emolliency and shine.¹² Its light color ensures it does not affect the shade of the added pigments or dyes.

13. Industry-Wise Application 3: High-Performance Lubricants

Used in specialized greases where low-temperature fluidity and high-temperature stability are required. It is often used in lubricants for the food processing and aerospace industries.

14. Industry-Wise Application 4: Specialty Chemicals

A preferred feedstock for producing high-purity Sebacic acid and Undecylenic acid, used in the production of high-grade Nylon 6,10 and Nylon 11.

15. Formulation Guide

• Incorporation: Add PPG slowly under moderate agitation to ensure uniform blending with resins.

• Heating: If the application requires pre-heating, do not exceed 60°C for extended periods to maintain the pale color.

16. Sustainability Data

Pale Pressed Castor Oil is a 100% natural, renewable, and biodegradable material. It provides a non-toxic, eco-friendly alternative to synthetic polyols and mineral-based oils.

17. Packaging & Logistics (Technical)

• Drums: 200kg HDPE or Epoxy-lined MS Drums to maintain color purity.

• IBCs: 1-ton Intermediate Bulk Containers for industrial use.¹³

• Protection: Always store under nitrogen blanketing if possible once the original seal is broken to prevent oxidation.

18. Storage Science

PPG should be stored in a cool, dry place. Because of its light color, it is particularly sensitive to UV light, which can cause slight yellowing over time. Stainless steel tanks (Grade 304 or 316) are recommended for bulk storage to prevent trace metal contamination.

19. Troubleshooting Guide

• Problem: Slight yellowing in the final product. Solution: Ensure the PPG was not exposed to high heat or direct sunlight before use.

• Problem: Sedimentation at low temperatures. Solution: This is natural for vegetable oils; gently warm the oil to 30°C to return it to a clear state.

20. Regulatory Compliance

Our PPG Castor Oil is REACH Compliant and produced in accordance with GMP-aware standards, making it suitable for use in regulated global markets.

21. Safety (SDS Summary)

• Handling: Standard PPE (gloves and goggles) is recommended.

• Fire: Use dry chemical, CO2, or foam extinguishers.

• Environment: PPG is biodegradable and non-toxic to aquatic systems.¹⁴

22. Sample Validation Process

For laboratory trials, we recommend performing a Lovibond Color Test and Acid Value check. For cosmetic or pharmaceutical applications, a clarity check at 10°C is also advised.

23. Commercial Efficiency

By using PPG, manufacturers reduce the need for expensive bleaching or neutralizing steps in their own production lines. The consistency of the first-press oil ensures that production parameters remain stable, reducing waste and downtime.

24. Technical FAQs

1. Is PPG the same as Cold Pressed Oil? While similar, PPG refers to the quality and refinement level (first pressing), whereas “Cold Pressed” specifically denotes the temperature control during extraction. PPG is refined to ensure industrial consistency.

2. Can PPG be used for polyurethane coatings? Yes, its low acidity and high hydroxyl value make it an excellent choice for high-clarity PU resins.

3. What is the shelf life of PPG? When stored correctly in a sealed container, PPG maintains its specifications for 12 to 24 months.

25. Contact CTA

For Technical Data Sheets (TDS), specific Lovibond color requirements, or to request a sample of our Pale Pressed Grade, please contact our export division at: export@novaind.in