Octadecylamine Polyoxyethylene Ether AC-1810 (CAS: 26635-75-6), chemically named octadecylamine polyoxyethylene (10) ether, with molecular formula C₃₈H₇₉NO₁₀ and molecular weight of approximately 710. This product belongs to nonionic surfactants while possessing weak cationic properties, which can impart certain adsorption and antistatic properties to treated surfaces. The product has an active ingredient content ≥ 99%, free alcohol content ≤ 1%, and tertiary amine content ≥ 95%, with high purity and stable performance.
This product is readily soluble in water and organic solvents. The pH value of a 1% aqueous solution is 6.0~8.0, and the pH value of a 5% aqueous solution is 9.0~11.0. The cloud point reaches 90°C (1% aqueous solution), maintaining good activity even in high-temperature aqueous systems. It exhibits excellent emulsifying, wetting, and dispersing capabilities, with high stability in acid, alkali, and hard water media, making it highly versatile.
| Parameter Item | Technical Index |
|---|---|
| Appearance (25°C) | Light yellow to yellow waxy solid |
| Ionicity | Nonionic (weak cationic) |
| CAS No. | 26635-75-6 |
| Molecular Formula | C₃₈H₇₉NO₁₀ |
| Molecular Weight | Approximately 710 |
| Active Ingredient Content | ≥ 99% |
| Solid Content | ≥ 99% |
| Moisture | ≤ 0.5% |
| HLB Value | 12.5 |
| Melting Point | 40~50°C |
| Density (25°C) | 0.95 g/cm³ |
| Cloud Point (1% aqueous solution) | 90°C |
| pH (1% aqueous solution) | 6.0~8.0 |
| pH (5% aqueous solution) | 9.0~11.0 |
| Surface Tension (1 g/L, 25°C) | 32 mN/m |
| Critical Micelle Concentration CMC (25°C) | 0.01 g/L |
| Hydroxyl Value | 160 mg KOH/g |
| Acid Value | ≤ 1 mg KOH/g |
| Saponification Value | ≤ 2 mg KOH/g |
| Amine Value | ≤ 5 mg KOH/g |
| Iodine Value | ≤ 2 g I₂/100g |
| Tertiary Amine Content | ≥ 95% |
| Free Alcohol | ≤ 1% |
| Flash Point | ＞ 200°C |
| Foaming Property | Low foaming |
| Alkali Resistance | Alkali resistant |
| Unsaturation | Saturated |
| Hygroscopicity | Hygroscopic |
| Heavy Metals | ≤ 10 mg/kg |
| Arsenic | ≤ 2 mg/kg |
| Chemical Stability | Stable, avoid strong oxidizers |
| Kinematic Viscosity | Not applicable (solid at room temperature) |
| Refractive Index | Not applicable (solid at room temperature) |
Based on its HLB value of 12.5 and cloud point of 90°C, AC-1810 is particularly suitable as an O/W (oil-in-water) emulsifier, recommended for pesticide formulation such as emulsifiable concentrates, suspension concentrates, and microemulsions, with a typical usage of 5% to 15% of the active ingredient. In textile dyeing leveling agents, a recommended working concentration is 0.5 to 2 g/L; when used as an antistatic finishing agent, dosage is generally 0.3% to 1.0% of the fabric weight.
In daily chemical creams and lotions, as an auxiliary emulsifier and solubilizer, it is recommended to add 1% to 5% of the total formulation. In metalworking fluids as a corrosion inhibitor component, a recommended addition of 0.5% to 3%; for petroleum demulsification applications, the optimal dosage should be determined through experiments based on crude oil properties.