Octadecylamine Polyoxyethylene Ether AC-1810, chemically named Octadecylamine Polyoxyethylene (10) Ether, also known as PEG-10 Stearylamine / Polyoxyethylene (10) stearylamine, has the molecular formula C₃₈H₇₉NO₁₀ and a molecular weight of approximately 710. This product, manufactured by Guoli Chemical, is a polyoxyethylene ether nonionic surfactant prepared by the addition reaction of octadecylamine (stearylamine) with 10 moles of ethylene oxide (EO).
The molecular structure of AC-1810 contains both hydrophilic polyoxyethylene chains and hydrophobic long-chain octadecyl groups, along with a tertiary amine group, giving it excellent emulsifying, wetting, and dispersing capabilities. Its ionic nature is nonionic, while the tertiary amine group imparts weak cationic properties, allowing it to adsorb on treated surfaces and provide antistatic effects. This product maintains high stability in acidic, alkaline, and hard water media, making it suitable for a wide range of systems, and it is a low-foaming surfactant.
The product has an active content of ≥99%, moisture content ≤0.5%, tertiary amine content ≥95%, hydroxyl value of approximately 160 mg KOH/g. It is a waxy solid at room temperature (melting point 40–50°C), with a cloud point of 90°C for a 1% aqueous solution and a critical micelle concentration (CMC) of only 0.01 g/L (25°C), indicating excellent surface activity and cost-effectiveness.
| Item | Specification |
|---|---|
| Chemical Name | Octadecylamine Polyoxyethylene (10) Ether |
| CAS Number | 26635-75-6 |
| Molecular Formula | C₃₈H₇₉NO₁₀ |
| Molecular Weight | Approx. 710 |
| Appearance | Light yellow to yellow waxy solid |
| Ionic Nature | Nonionic (weakly cationic) |
| HLB Value | 12.5 |
| Active Content | ≥99% |
| Moisture | ≤0.5% |
| pH Value (1% aqueous solution) | 6.0–8.0 |
| pH Value (5% aqueous solution) | 9.0–11.0 |
| Hydroxyl Value | 160 mg KOH/g |
| Acid Value | ≤1 mg KOH/g |
| Saponification Value | ≤2 mg KOH/g |
| Amine Value | ≤5 mg KOH/g |
| Tertiary Amine Content | ≥95% |
| Iodine Value | ≤2 g I₂/100g |
| Cloud Point (1% aqueous solution) | 90°C |
| Melting Point | 40–50°C |
| Density (25°C) | 0.95 g/cm³ |
| Flash Point | >200°C |
| Surface Tension (1g/L, 25°C) | 32 mN/m |
| Critical Micelle Concentration (25°C) | 0.01 g/L |
| Solubility | Easily soluble in water and organic solvents |
| Foaming Property | Low foam |
| Alkali Resistance | Resistant to alkali |
| Heavy Metals | ≤10 mg/kg |
| Arsenic | ≤2 mg/kg |
| Packaging | 50kg plastic drum / 200kg plastic drum / IBC tote |
AC-1810, with its excellent emulsifying, wetting, and dispersing abilities as well as weak cationic properties, has broad and mature applications in the following industries: