Castor Oil Based Esterols (C-18 Methyl Esters)
Manufactured by Nova Industries
Nova Industries offers a specialized range of Castor Based Esterols, a robust series of C-18 unsaturated fatty acid esters derived from the steam cracking (pyrolysis) process of Castor Oil.
Physically, these Esterols represent the “heavy fraction” that remains after the volatile C-7 and C-11 components are distilled off. Because they are not cracked during the high-temperature process, they retain a complex profile of natural C-18 fatty esters—including Methyl Oleate, Methyl Linoleate, Methyl Stearate, and unreacted Methyl Ricinoleate. This unique composition makes them an economical yet highly functional base for industrial lubricants and construction chemicals.
1. Technical Characteristics
Esterols are valued for their “oiliness,” unsaturation, and chemical reactivity.
- Sulfurization Base: Due to the high content of unsaturated fatty acids (Oleic/Linoleic), Esterols have a high capacity to “fix” or react with sulfur. This makes them ideal feedstocks for manufacturing Dark Sulfurized Oils used as Extreme Pressure (EP) additives.
- Lubricity: The residual hydroxyl groups and ester linkages provide excellent wetting properties on metal surfaces.
- Emulsification: They serve as effective co-surfactants and coupling agents in bitumen and asphalt formulations.
2. Key Industrial Applications
Metalworking & Lubricants
- Sulfurized Additives: The primary application. Esterols are sulfurized to produce anti-wear and extreme-pressure additives for cutting oils, gear oils, and soluble metalworking fluids.1
- Grease Formulations: Used as a saponifiable fat source in the manufacture of economical lithium or calcium-based greases.
Construction & Mining
- Concrete Mold Release: Used as the oily base in release agents. They form a barrier that allows concrete to separate cleanly from formwork without staining.
- Bitumen Emulsions: Acts as a fluxing agent and emulsifier in asphalt mixes, improving the coating of road aggregates.2
Leather & Textiles
- Fat Liquors: Used in the leather tanning industry to lubricate the leather fibers (fat-liquoring), preventing them from sticking together during drying and ensuring the leather remains soft and pliable.3
- Anti-Foams: utilized in industrial fermentation and paper processing as a defoaming agent.
3. Technical Specifications (TDS)
Nova Industries supplies different grades tailored for viscosity and sulfurization potential.
| Parameter | Specification (Typical) | Test Method |
| Product Name | Castor Esterol (C-18 Mixed Esters) | — |
| Chemical Basis | Methyl Esters of C-18 Fatty Acids | — |
| Appearance | Amber to Dark Brown Liquid | Visual |
| Acid Value | 10 – 20 mg KOH/g | ISO 660 |
| Saponification Value | 160 – 180 mg KOH/g | ISO 3657 |
| Iodine Value | 85 – 100 (High Unsaturation) | ISO 3961 |
| Viscosity @ 40°C | 20 – 40 cSt | ASTM D445 |
| Flash Point | $> 150°C$ | Closed Cup |
| Moisture | 0.5% Max | Karl Fischer |
Packaging & Supply
- Packaging: 190 Kg Reconditioned Steel Drums / ISO Tanks / Bulk Tankers.
- Storage: Store in a cool, dry place. Due to the dark color and industrial nature, standard steel drums are sufficient.
For Industrial Lubricant Additives:
Nova Industries
Website: https://novaind.in/