Question

What is Castor Oil Polyoxyethylene Ether EL-12

Answer
2026-05-17 官方文档 蓖麻油聚氧乙烯醚EL-12

Castor Oil Polyoxyethylene Ether EL-12 is a nonionic surfactant produced by the addition polymerization of natural castor oil with ethylene oxide (EO=12). It appears as a light yellow to yellow transparent oily liquid, with CAS number 61791-12-6.

Detailed Description

Castor Oil Polyoxyethylene Ether EL-12 (chemical name: PEG-12 Castor Oil) is prepared by the addition polymerization of natural castor oil with 12 moles of ethylene oxide. This product is an excellent O/W emulsifier, providing efficient emulsification for various oil phases such as mineral oils, animal and vegetable oils, and organic solvents, significantly reducing oil-water interfacial tension and forming stable emulsion systems.

Due to its nonionic nature, EL-12 is highly compatible with nonionic, anionic, and cationic surfactants, offering great formulation flexibility. It maintains stable surface activity in acidic, alkaline, and hard water media, demonstrating excellent chemical tolerance. Derived from natural castor oil, it exhibits extremely low skin and eye irritation, making it a mild and low-irritation green auxiliary.

As one of the flagship products of Haian Guo Li Chemical Co., Ltd., EL-12 has mature applications in multiple industries, including cosmetics and personal care, pesticide formulations, textile auxiliaries, metalworking fluids, and industrial cleaning agents. It is a versatile, cost-effective multifunctional nonionic surfactant.

Technical Parameters

ParameterSpecification
Product NameCastor Oil Polyoxyethylene Ether EL-12
CAS Number61791-12-6
AliasPolyoxyethylene Castor Oil EL-12, PEG-12 Castor Oil, Ethoxylated Castor Oil (EO=12), Cremophor EL-12, Polyethylene Glycol-12 Castor Oil
AppearanceLight yellow to yellow transparent oily liquid
Ionic TypeNonionic surfactant
Emulsification TypeO/W (oil-in-water) emulsifier
EO Addition Number12
Flash Point>200°C (closed cup)
Acute Oral Toxicity (LD50)>5000 mg/kg (rat)
Acute Dermal Toxicity (LD50)>2000 mg/kg (rat)
Skin IrritationNon-irritating
Eye IrritationNon-irritating
BiodegradabilityReadily biodegradable
Hazard ClassificationNon-hazardous

Application Suggestions

  • Cosmetics and Personal Care: Used as a nonionic solubilizer and emulsifier in creams, lotions, cleansing oils, bath products, etc. It effectively solubilizes fragrances, essential oils, and other oily ingredients, providing a smooth skin feel and stable emulsification structure.
  • Pesticide Formulations: As an efficient emulsifier for emulsifiable concentrates (EC) and emulsion concentrates (EW), it helps evenly disperse pesticide active ingredients in water, enhancing wetting and spreading properties of the spray solution and improving field application efficacy.
  • Textile Auxiliaries: Used in spinning oils, softening agents, and high-temperature leveling agents, providing excellent smoothness and antistatic properties, promoting uniform dye uptake, and improving fabric hand feel and processing performance.
  • Metalworking Fluids: Promotes oil phase dispersion in cutting fluids, grinding fluids, etc., forming stable emulsions while imparting good boundary lubrication to protect workpieces and tools.
  • Industrial Cleaning Agents: Exerts wetting, penetrating, and emulsifying effects, rapidly removing oil and grease from metal, plastic, and other surfaces, suitable for various aqueous and semi-aqueous cleaning formulations.

Precautions

Store at temperatures between 5-40°C, keep the container sealed in a cool, dry, and well-ventilated warehouse, avoid contact with moisture to prevent moisture absorption, and keep away from strong oxidizers, strong acids, and strong alkalis. It is recommended to wear protective gloves and safety glasses during operation, avoiding direct contact with skin and eyes. Although the flash point is high (>200°C), general fire prevention measures should be observed, keeping away from ignition sources and hot surfaces.