Castor Oil Polyoxyethylene Ether EL-90 is a high-performance nonionic surfactant characterized by excellent emulsifying ability, broad chemical compatibility, and superior biodegradability, excelling in fields such as industrial emulsification, agrochemicals, textiles, and daily chemicals.
Detailed Description
Castor Oil Polyoxyethylene Ether EL-90 (CAS Number: 61791-12-6) is a nonionic surfactant polymerized from natural castor oil and ethylene oxide, appearing as a light yellow to yellow paste or viscous liquid. As polyoxyethylene (90) castor oil, its molecular structure features a relatively long polyoxyethylene chain segment that imparts excellent hydrophilic properties, making it an efficient O/W (oil-in-water) emulsifier.
The core performance advantages of this product are reflected in five aspects: First, outstanding emulsifying ability, demonstrating excellent emulsion stabilization for various oil phases and solvent systems by effectively reducing interfacial tension; second, high solubilization and dispersibility, significantly enhancing the solubility and uniform dispersion of poorly soluble substances; third, excellent wetting and spreading properties, enabling rapid wetting of diverse substrate surfaces; fourth, remarkable chemical compatibility, remaining stable across a wide pH range while also exhibiting good resistance to hard water and electrolytes; fifth, environmental friendliness, with superior biodegradability and classified as a green additive with low environmental burden.
Regarding safety, this product is not classified as a hazardous chemical. It possesses very low acute oral toxicity (rat oral LD50 > 5,000 mg/kg), is non-irritating to the skin, and causes only slight, reversible eye irritation that generally fully recovers within 24 hours. This allows for safe use even in applications involving direct human contact, such as cosmetics and personal care products.
Technical Parameters
| Parameter Item | Specification |
|---|
| Product Name | Castor Oil Polyoxyethylene Ether EL-90 |
| CAS Number | 61791-12-6 |
| Surfactant Type | Nonionic Surfactant |
| Appearance | Light yellow to yellow paste or viscous liquid |
| Emulsifier Type | O/W (Oil-in-Water) Emulsifier |
| Acute Oral Toxicity (LD50) | > 5,000 mg/kg (rat) |
| Skin Irritation | Non-irritating |
| Fish Acute Toxicity (LC50/96h) | > 100 mg/L |
| Biodegradability | Biodegradable |
| Recommended Storage Temperature | 5°C to 40°C |
Note: The above data are sourced from the Guoli Chemical product database. Specific technical parameters such as HLB value, cloud point, and hydroxyl value are not available at this time. For detailed technical specifications, please contact the manufacturer for a Certificate of Analysis (COA).
Application Recommendations
EL-90 has an extremely wide range of applications. The following are the main fields and suggestions:
- Industrial Emulsifier: Used as the primary emulsifier in various oil-water systems, providing excellent emulsion stability and narrow particle size distribution.
- Pesticide Emulsifier: A key component in emulsifiable concentrates, microemulsions, and aqueous emulsions, helping the active ingredient disperse uniformly to improve efficacy and field application results.
- Chemical Fiber Oil Agent: Imparts good lubricity, cohesion, and antistatic properties to synthetic fibers, reducing the breakage rate during spinning.
- Textile Auxiliary: Used in pretreatment, dyeing, and finishing processes to enhance penetration, leveling, and softening effects.
- Emulsion Polymerization: Provides nucleation and stabilization in the emulsion polymerization of monomers such as acrylics and vinyl acetate.
- Cosmetics and Personal Care Products: Serves as a mild emulsifier and solubilizer in formulations like creams, lotions, shampoos, and shower gels.
- Metalworking Fluids: Exerts synergistic emulsifying, lubricating, and anti-rust effects in cutting fluids, grinding fluids, and rust preventive fluids.
- Leather Auxiliary: Applied in degreasing, fatliquoring, and finishing processes to impart a soft, full hand feel to leather.
- Detergents: Enhances detergency, dispersibility, and foam control in both household and industrial detergents.
Precautions
- At low temperatures, the product may solidify or become turbid, which is a normal physical change. Soak in a warm water bath, slowly heat, and stir until uniform; performance will not be affected. Direct heating of the container with an open flame is strictly prohibited.
- During handling, it is recommended to wear nitrile rubber gloves and chemical safety goggles, and maintain good ventilation in the operating area.
- Store in a cool, dry, well-ventilated indoor warehouse, away from direct sunlight, high temperature, and high humidity. Stainless steel, HDPE, or PP containers are recommended.
- Prevent large quantities of undiluted product from being discharged directly into water bodies. Spills should be collected with inert absorbent materials and disposed of in compliance with regulations.
