Octadecylamine Polyoxyethylene Ether AC-1812 (CAS: 26635-75-6) is a non-ionic surfactant produced by the addition of 12 moles of ethylene oxide to octadecylamine. Its molecular structure contains both a long-chain octadecyl hydrophobic group and a polyoxyethylene hydrophilic chain segment. This unique "tadpole-like" molecular configuration endows the product with excellent interfacial adsorption capacity and multifunctional application properties. The product appears as a pale yellow to yellow paste or viscous liquid with good water dispersibility.
The most prominent differentiating feature of this product lies in its dual ionic characteristics: under neutral and alkaline conditions, it behaves as a stable and compatible non-ionic surfactant; under acidic conditions, the amine group undergoes protonation, presenting cationic surfactant characteristics, enabling strong electrostatic adsorption on negatively charged surfaces (such as fibers, metals, plastics, etc.). This property gives it unique advantages in areas such as textile leveling, antistatic treatment, and metal corrosion inhibition, making it difficult to replace with ordinary non-ionic or cationic surfactants.
Furthermore, AC-1812 achieves an optimized hydrophilic-lipophilic balance through the precise design of 12 EO units in its molecule, allowing it to maintain stable performance in high-temperature, high-pressure dyeing processes (such as polyester dyeing at 130°C) while also providing efficient emulsification and antistatic effects in formulations such as pesticide emulsions and spinning oils. It truly achieves "one agent, multiple functions," effectively simplifying industrial formulations and reducing overall costs.
| Parameter | Specification or Description |
|---|---|
| Chemical Name | Octadecylamine Polyoxyethylene (12) Ether / PEG-12 Stearylamine |
| CAS Number | 26635-75-6 |
| Product Type | Non-ionic surfactant (exhibits cationic properties under acidic conditions) |
| Appearance | Pale yellow to yellow paste or viscous liquid |
| EO Adduct Number | 12 |
| Water Dispersibility | Good |
| pH Adaptability | Stable over a wide pH range (acidic to alkaline) |
| Hard Water Resistance | Excellent, unaffected by calcium and magnesium ions |
| Thermal Stability | Excellent, suitable for high-temperature and high-pressure processes |
| Shelf Life | Two years from date of manufacture (under original sealed packaging, cool and dry conditions) |
Based on the multifunctional properties of AC-1812, application recommendations for different industries are as follows:
It is recommended to wear dust masks, chemical safety goggles, and chemical-resistant gloves during operation. The workplace should be well ventilated. The product should be stored in a cool, dry, well-ventilated warehouse with temperatures below 35°C, away from fire, heat sources, and direct sunlight, and kept separate from strong oxidizers, strong acids, strong bases, and flammable materials. After opening, reseal immediately to prevent moisture absorption. In case of skin contact, wash with plenty of soap and water for at least 15 minutes; in case of eye contact, rinse with running water for at least 15 minutes and seek immediate medical attention.