According to the technical data from Guoli Chemical, the core advantages of Castor Oil Polyoxyethylene Ether EL-12 lie in its **excellent emulsifying ability** and the **extremely high safety and formulation compatibility** derived from natural castor oil, making it outstanding in fields requiring efficient, mild, and stable formulations.
The following is a detailed explanation of its significant advantages over similar products:
#### 1. Highly Effective Emulsifying Core Performance
EL-12 is a nonionic O/W (oil-in-water) emulsifier. The number of ethylene oxide adducts (EO=12) in its molecular structure has been optimized to significantly reduce the oil-water interfacial tension.
- **Broad-spectrum emulsifying power**: It has an efficient emulsifying effect on mineral oils, animal and vegetable oils, and various organic solvents, quickly forming stable, fine emulsions.
- **Low dosage, high efficiency**: It achieves ideal emulsification results at relatively low addition concentrations, helping to optimize formulation costs.
#### 2. Excellent Safety and Mildness
This is a key advantage that distinguishes EL-12 from many traditional emulsifiers, especially suitable for personal care products.
- **Non-toxic and non-irritating**: Acute oral toxicity LD50 > 5000 mg/kg, classified as practically non-toxic. Skin and eye irritation tests both show **no irritation**, and there is no sensitization.
- **Natural origin**: Based on natural castor oil, it aligns with the current market demand for green, mild, and sustainable raw materials.
#### 3. Excellent Chemical Stability and Compatibility
- **Broad chemical tolerance**: Maintains stable surface activity in acidic, alkaline, and hard water media, adapting to complex formulation systems.
- **Nonionic nature**: Widely compatible with anionic, cationic, and other nonionic surfactants, offering high formulation design flexibility without failure due to ionic conflicts.
#### 4. Key Physicochemical Data Reference
| Item | Technical Index |
| :--- | :--- |
| **Appearance (25℃)** | Light yellow to yellow transparent oily liquid |
| **Type** | Nonionic surfactant |
| **Main Component** | PEG-12 Castor Oil |
| **CAS No.** | 61791-12-6 |
| **HLB Value (Reference)** | Approximately 8-9 (moderate, conducive to formulating O/W emulsions) |
| **Flash Point (Closed Cup)** | > 200℃ |
| **Skin Irritation** | Non-irritating |
#### 5. Application Areas and Recommendations
Based on its advantages, EL-12 performs exceptionally well in the following fields:
- **Personal Care Products**: As a solubilizer and emulsifier for creams, lotions, and cleansing oils, providing a fine skin feel without burdening the skin.
- **Pesticide Formulations**: As an emulsifier for emulsifiable concentrates (EC) and oil-in-water emulsions (EW), improving the thermodynamic stability of pesticide formulations and their emulsification performance during field dilution.
- **Industrial Fields**: Used in metalworking fluids and industrial cleaners for its emulsifying, lubricating, and penetrating effects.
#### 6. Notes
- Although EL-12 has good chemical stability, it should be stored sealed in a cool, dry place. The recommended storage temperature is 5-40℃, avoiding extreme temperatures and prolonged contact with moisture or water vapor to prevent affecting product quality.
- When compounding with other raw materials, it is recommended to conduct small-scale experiments to determine the optimal addition ratio and process conditions.
