OP-4SA (CAS No.: 9051-57-4) is a light yellow transparent liquid, an anionic surfactant formed by sulfation of nonylphenol polyoxyethylene ether and neutralized with ammonium salt. Its unique molecular structure organically combines the steric stabilization effect of nonionic chains with the electrostatic stabilization effect of anionic groups, endowing the product with comprehensive performance advantages distinct from ordinary single-type surfactants.
This product performs particularly outstandingly in the field of emulsion polymerization. As an anionic emulsifier, it provides excellent mechanical and chemical stability for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic. During the polymerization process, it can effectively control particle size distribution while ensuring the long-term storage stability of the emulsion. Meanwhile, in application scenarios such as textile pretreatment, leather degreasing and soaking, metalworking fluids, and industrial hard surface cleaning, its excellent wetting and penetrating properties can significantly improve processing efficiency and reduce chemical usage.
The product has a wide pH application range and can perform stably under conditions from weakly acidic to alkaline. It has good compatibility with various inorganic salts, alkalis, and other auxiliaries, showing strong system adaptability. Even in high-hardness water environments, it is not prone to form calcium soap precipitates, exhibiting excellent hard water resistance. If turbidity or stratification occurs at low temperatures, it is a normal physical phenomenon. After warming to room temperature and stirring evenly, it can still be used normally without affecting product performance.
| Parameter Item | Parameter Details |
|---|---|
| Product Name | OP-4SA Nonylphenol Polyoxyethylene Ether Ammonium Sulfate |
| CAS No. | 9051-57-4 |
| Product Type | Anionic Surfactant |
| Appearance | Light Yellow Transparent Liquid |
| Active Content | 60% |
| Ionic Type | Anionic (with nonionic characteristics) |
| pH Application Range | Weakly acidic to alkaline conditions |
| Hard Water Resistance | Excellent, not prone to calcium soap precipitation |
| Electrolyte Compatibility | Good, compatible with inorganic salts, alkalis, etc. |
| Shelf Life | 12 months |
| Storage Temperature | Recommended 5°C to 35°C |
Emulsion Polymerization: As an anionic emulsifier for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic, it is recommended to compound with other anionic or nonionic emulsifiers to achieve synergistic effects, effectively controlling latex particle size and improving film-forming properties.
Textile Auxiliaries: Used in processes such as pretreatment scouring and dye leveling, leveraging its excellent alkali resistance and penetrating power to improve fabric processing efficiency and dyeing uniformity.
Leather Processing: Used as a penetrating agent in key processes such as soaking, degreasing, and tanning, promoting uniform penetration of chemicals into the leather fiber to enhance softness and fullness.
Metalworking Fluids: Used as an emulsifier and rust inhibitor in cutting fluid and anti-rust liquid formulations, providing good emulsion stability and lubricating properties to the working fluid.
The specific dosage needs to be determined through experiments based on the target system and process conditions. Stir thoroughly before use.