Emulsifier A-105 (CAS: 9004-96-0), chemically named nonylphenol polyoxyethylene (10) ether, also known as oleyl alcohol polyoxyethylene ether, polyoxyethylene oleyl ether (Oleth), belongs to the category of nonionic surfactants. The product appears as a light yellow to yellow viscous liquid, produced by the addition reaction of nonylphenol and ethylene oxide. The synergistic effect of ether bonds and hydroxyl groups in its molecular structure endows the product with excellent interfacial activity, capable of rapidly reducing oil-water interfacial tension, and showing good tolerance to acidic, alkaline media and hard water environments.
The core advantage of this product lies in its multifunctionality: high emulsifying power enables rapid formation of stable emulsions suitable for various oil phase systems; excellent wetting properties significantly enhance the penetration and spreading speed of liquids on solid surfaces; outstanding dispersing ability effectively prevents agglomeration and sedimentation of solid particles, maintaining a uniform and stable suspension system; strong cleaning capability provides superior removal of oil, wax, and organic residues. Additionally, Emulsifier A-105 has good compatibility with anionic, cationic, and other nonionic surfactants, and can exert synergistic effects when used in combination.
As a classic nonionic surfactant, Emulsifier A-105 is commonly used as an emulsifier in pesticide formulations such as emulsifiable concentrates (EC), oil-in-water emulsions (EW), and microemulsions (ME); in textile dyeing and finishing, it serves as a leveling agent and detergent; it also plays a key role in industrial cleaning, leather degreasing, metalworking fluids, and emulsion polymerization.
| Parameter | Technical Index |
|---|---|
| Product Name | Emulsifier A-105 |
| Chemical Name | Nonylphenol polyoxyethylene (10) ether |
| CAS Number | 9004-96-0 |
| Aliases | Oleyl alcohol polyoxyethylene ether, Polyoxyethylene oleyl ether, Oleth |
| Product Type | Nonionic surfactant |
| Appearance | Light yellow to yellow viscous liquid |
| EO Addition Number | 10 |
| Flash Point (Closed Cup) | >150°C |
| LD₅₀ (Rat, Oral) | >2000 mg/kg |
| Skin Irritation | Slightly irritating (single contact) |
| Eye Irritation | Severe irritation/damage risk |
| Fish LC₅₀ (96h) | 1-10 mg/L |
| Daphnia EC₅₀ (48h) | 1-10 mg/L |
| Biodegradability | Not readily biodegradable |
Pesticide Formulations: As a high-efficiency pesticide emulsifier, suitable for preparing emulsifiable concentrates (EC), oil-in-water emulsions (EW), microemulsions (ME), etc. The recommended dosage ranges from 3% to 15% depending on the type of technical material and formulation, effectively improving the spread and penetration of the spray solution and ensuring the storage stability of the formulation.
Textile Dyeing and Finishing: Used as a leveling agent and detergent in pretreatment and dyeing processes. For leveling, the recommended dosage is 0.5-2 g/L to slow down the dye uptake rate and achieve uniform color; for cleaning, dosage of 1-3 g/L effectively removes oils and stains from fiber surfaces.
Industrial Hard Surface Cleaning: Formulated in hard surface cleaners for metals, glass, etc., with recommended addition of 2%-10%, effectively emulsifying mineral oils and animal/vegetable fats. It works better when combined with alkaline additives and has good anti-redeposition ability.
Metalworking Fluids: Used as the main emulsifier in emulsion-type and micro-emulsion cutting fluids and grinding fluids, with recommended dosage of 5%-20%, combining base oil with water into a stable working fluid providing lubrication, cooling, and rust prevention.
Emulsion Polymerization: Used as the main emulsifier in emulsion polymerization of monomers such as acrylates and styrene, recommended dosage of 1%-4% of total monomer weight, effectively controlling latex particle size distribution and improving the mechanical and storage stability of the polymer emulsion.