Oleic Acid Polyoxyethylene Ester A-105 (CAS No.: 9004-96-0) is a nonionic surfactant, appearing as a light yellow to yellow oily liquid or paste. The product is synthesized by addition polymerization of natural oleic acid with ethylene oxide. Its molecular structure contains both ester groups and polyoxyethylene chains, imparting unique amphiphilic properties and exhibiting excellent interfacial activity in both aqueous and oil-phase systems.
With its outstanding emulsifying ability, excellent acid-alkali resistance, and good hard water stability, A-105 can be widely combined with anionic, cationic, and other nonionic surfactants for synergistic effects. It is a key component in many industrial formulations to achieve stable emulsification and efficient wetting.
| Industry | Specific Process/Application | Functional Role |
|---|---|---|
| Textile Printing and Dyeing | Pretreatment scouring agent, leveling agent, dye dispersant, after-treatment softener | Wetting penetration, leveling and dispersing, improving uniformity and hand feel of fabric treatment |
| Metalworking | Emulsified oil, semi-synthetic/fully synthetic cutting fluid, grinding fluid | Emulsification, lubrication, rust prevention, extending tool life, improving workpiece surface finish |
| Pesticide Formulations | Pesticide emulsifiable concentrate (EC), emulsion in water (EW), etc. | Emulsifying and dispersing pesticide active ingredients, enhancing wetting and spreading of spray liquid on crop surfaces |
| Industrial Cleaning | Cleaning of heavy oil stains on metal parts and equipment surfaces | Emulsifying and removing mineral oils, animal and vegetable oils, with good detergency and low foam characteristics |
| Leather Processing | Leather degreasing process | Deeply penetrating fiber to emulsify and remove natural fats and oils, achieving uniform and thorough degreasing |
| Cosmetics | Personal care products such as creams, lotions, makeup removers | Mild emulsifier and solubilizer, providing stable emulsion system and improving skin feel |
A-105 maintains chemical stability over a wide pH range and is suitable for both acidic and alkaline working environments. It is insensitive to calcium and magnesium ions and will not precipitate or lose activity in hard water. It is recommended to be used in combination with other surfactants to achieve synergistic effects and flexibly meet diverse formulation requirements. In emulsification systems, it can significantly reduce the total amount of emulsifier used, producing emulsions with fine particle size and high stability.