OP-4SA Ammonium Nonylphenol Polyoxyethylene Ether Sulfate (CAS: 9051-57-4) is a high-efficiency anionic surfactant prepared by sulfation of nonylphenol polyoxyethylene ether followed by neutralization with ammonia. The product appears as a light yellow transparent liquid with an active content of 60%. Its unique molecular structure combines the steric stabilization of nonionic segments with the electrostatic stabilization of anionic groups, offering excellent emulsifying, wetting, and dispersing properties.
The core advantages of this product include: outstanding emulsifying capability for various oil phases and monomers, forming stable and fine emulsion systems; significantly reducing surface tension and providing good dispersion and stabilization for solid particles such as pigments and fillers; excellent hard water resistance and good electrolyte compatibility, with stable performance under weak acid to alkaline conditions. It does not easily form calcium soap precipitation in high-hardness water environments and has good compatibility with various inorganic salts, alkalis, and other auxiliaries.
In emulsion polymerization applications, OP-4SA provides excellent mechanical and chemical stability for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic, effectively controlling particle size distribution while ensuring long-term storage stability of the emulsion. In textile, leather, and other industrial fields, its outstanding wetting and penetrating properties significantly improve processing efficiency and reduce chemical consumption.
| Parameter Item | Specification Index |
|---|---|
| Product Name | OP-4SA Ammonium Nonylphenol Polyoxyethylene Ether Sulfate |
| CAS Number | 9051-57-4 |
| Product Type | Anionic Surfactant |
| Active Content | 60% |
| Appearance | Light yellow transparent liquid |
| Ion Type | Anionic (with nonionic characteristics) |
| pH Application Range | Weak acid to alkaline conditions |
| Shelf Life | 12 months |
Note: Detailed physicochemical parameters such as HLB value, cloud point, hydroxyl value, and penetrating power are not available in this data. Please contact the technical department of Guoli Chemical for a complete product specification sheet.
Emulsion Polymerization: As a high-efficiency anionic emulsifier for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic, it is recommended to be used in combination with other anionic or nonionic emulsifiers to achieve synergistic effects. The specific dosage should be determined experimentally based on the target system and process conditions.
Textile Auxiliaries: Used in processes such as pretreatment scouring and level dyeing as a wetting agent, penetrating agent, and leveling agent. It offers excellent alkali resistance and penetrating power, improving fabric processing efficiency and dyeing uniformity.
Leather Processing: Used as a degreasing agent and penetration aid in key processes such as soaking, degreasing, and tanning. It promotes uniform penetration of chemicals into leather fibers, enhancing leather softness and fullness.
Metalworking Fluids: Used in formulations of emulsified cutting fluids and rust-preventive fluids, imparting excellent emulsifying stability, lubricating performance, and rust protection to the working fluid.
Industrial Cleaning: Suitable for hard surface cleaners and heavy-duty detergent formulations.