The alkali-resistant penetrant AEP, chemical name fatty alcohol polyoxyethylene ether phosphate (CAS: 68439-39-4), belongs to anionic surfactants. Its most outstanding feature is the chemical structural stability under strong alkaline conditions—even in concentrated alkali baths, its penetrating power does not diminish, which is far superior to ordinary penetrants, making it widely used in industries requiring high-alkali processes.
In addition to ultra-strong alkali resistance, AEP also possesses high-efficiency wetting and penetrating ability, quickly reducing the surface tension of the working fluid and promoting the uniform diffusion of the treatment liquid into the fiber or substrate interior. At the same time, it does not decompose or float oil under high-temperature boiling conditions, continuously and stably exerting its performance to ensure the stability of the production process.
From a formulation perspective, AEP's broad compatibility is very prominent—resistant to acids, alkalis, and hard water, it can be used in the same bath with various auxiliaries and high-concentration electrolytes, offering strong formulation adaptability. This enables it to "serve multiple purposes," helping to simplify the process flow, reduce the variety of chemicals, and effectively lower overall operating costs.
| Item | Parameter Description |
|---|---|
| Chemical Name | Fatty alcohol polyoxyethylene ether phosphate |
| CAS Number | 68439-39-4 |
| Alias | Isooctanol polyoxyethylene ether phosphate, alkyl ether phosphate, AEP |
| Ion Type | Anionic surfactant |
| Alkali Resistance | Stable structure in high-concentration alkali baths, penetrating power does not diminish |
| Temperature Resistance | Does not decompose or float oil under boiling conditions |
| Water Solubility | Resistant to hard water, compatible with various electrolytes |
| HLB Value | Not available (not provided in the database) |
AEP is mainly used in five major fields, each scenario relying on its core advantage of alkali-resistant penetration:
⚠️ Safety Risks: According to GHS classification, this product causes skin irritation (H315), serious eye irritation (H319), and is harmful to aquatic life (H402). Wear chemical protective gloves, protective clothing, and eye protection during operation, and wash skin thoroughly after handling.
Storage Conditions: It is recommended to store at a temperature between 5℃ and 40℃, keep the container tightly closed, and store in a cool, dry, well-ventilated warehouse away from heat sources and direct sunlight, separate from acids and oxidizers.