Octadecylamine polyoxyethylene ether AC-1810 (CAS: 26635-75-6) is a nonionic surfactant with weak cationic properties. At room temperature, it appears as a light yellow to yellow waxy solid with a melting point of 40–50°C. In practical use, it is usually preheated to a fluid state or dissolved in warm water before being added to the formulation system. The product has an HLB value of approximately 12.5, exhibiting excellent emulsifying, dispersing, wetting, and antistatic capabilities. It remains stable in acidic, alkaline, and hard water media, making it suitable for various industrial fields such as textile printing and dyeing, pesticide formulations, daily chemicals, metal processing, petroleum, and plastics.
As a multifunctional additive, AC-1810 can serve either as a primary emulsifier to build a stable emulsion system or as an auxiliary additive to improve wetting and penetration properties or impart antistatic performance to surfaces. The optimal dosage is significantly influenced by its role in the formulation (main agent or adjuvant), the ionic environment of the system, and the properties of the target emulsified object. Therefore, it is recommended that users conduct small-scale experiments before formal production to determine the dosage that achieves the best cost-performance ratio in their specific system.
| Parameter | Value/Description |
|---|---|
| Appearance (25°C) | Light yellow to yellow waxy solid |
| Ionicity | Nonionic (weakly cationic) |
| HLB Value | Approx. 12.5 |
| Cloud Point (1% aqueous solution) | Approx. 90°C |
| Hydroxyl Value | Approx. 160 mg KOH/g |
| Amine Value | ≤5 mg KOH/g |
| pH (1% aqueous solution) | 6.0–8.0 |
| Surface Tension (1 g/L, 25°C) | Approx. 32 mN/m |
| Critical Micelle Concentration (CMC) | 0.01 g/L (25°C) |
| Solubility | Easily soluble in water and organic solvents |
Textile Printing and Dyeing: When used as a leveling agent or antistatic finishing agent, the recommended dosage is 0.5%–2% of the total working bath. Dissolve by stirring in warm water at 40–50°C or heat directly to a liquid state before adding to the dye bath or finishing bath, effectively improving dye dispersion uniformity and fabric antistatic performance.
Pesticide Formulations: As an emulsifier for emulsifiable concentrates, aqueous emulsions, or microemulsions, the suggested proportion is 3%–10% of the total formulation mass. Combining with common anionic emulsifiers (e.g., calcium salts) can achieve better emulsification and dispersion effects.
Daily Chemicals: In products such as creams, lotions, and shampoos, as an emulsifying solubilizer, the dosage is typically 0.5%–3% of the total formulation. It helps disperse oil-soluble active ingredients stably and improves product transparency.
Metalworking Fluids: As a corrosion inhibitor added to cutting fluids or rust preventive oils, the reference dosage is 1%–5%, helping to form a protective film on metal surfaces to inhibit corrosion.
Petroleum Industry: When used as a component of demulsifiers, the dosage depends on the stability of the crude oil emulsion. It is usually determined through bottle testing at the oilfield, with typical injection concentrations of 10–100 ppm (based on crude oil mass).
Plastics Industry: As an internal antistatic agent, the recommended dosage is 0.3%–2% of the plastic raw material mass. Add during mixing and ensure thorough dispersion to significantly reduce the surface resistance of plastic products.