Octadecylamine Polyoxyethylene Ether AC-1820, also known as PEG-20 Stearylamine, Antistatic Agent AC-1820, Leveling Agent AC-1820, has a molecular formula of C58H119NO20 and a molecular weight of about 1150. This product uses octadecyl fatty amine as the starting material, and through polymerization reaction with ethylene oxide, introduces hydrophilic polyoxyethylene chains (EO number about 20) onto the hydrophobic long-chain alkyl group, thus obtaining a unique amphiphilic molecular structure. The product appears as a light yellow to yellow color, a flowable paste at room temperature (melting point about 35°C), and has slight hygroscopicity.
The core value of AC-1820 lies in its pH-dependent ion conversion characteristics. Under neutral and alkaline conditions, it functions as a stable non-ionic surfactant, exhibiting excellent emulsification, wetting, and dispersion capabilities; when the system turns acidic, the tertiary amine groups in the molecule (tertiary amine content ≥95%) undergo protonation, giving it the strong affinity of a cationic surfactant to the substrate surface. This dual ion characteristic gives AC-1820 high application flexibility in complex formulation systems.
The Octadecylamine Polyoxyethylene Ether AC-1820 produced by Hai'an County Guoli Chemical Co., Ltd. has an active content ≥99%, an HLB value as high as 15.4, a cloud point above 100°C, is easily soluble in water and various organic solvents, and shows high tolerance to acid-base environments and hard water ions. The product has a surface tension of about 35 mN/m (1% solution, 25°C), a critical micelle concentration of about 60 mg/L, low foam, and is suitable for industrial systems requiring low foam or foam control.
| Parameter | Technical Specification |
|---|---|
| CAS Number | 26635-75-6 |
| Molecular Formula | C58H119NO20 |
| Molecular Weight | About 1150 |
| Appearance (25°C) | Light yellow to yellow |
| Ionic Type | Non-ionic (exhibits cationic properties under acidic conditions) |
| HLB Value | 15.4 |
| Cloud Point (1% Aqueous Solution) | >100°C |
| Active Content | ≥99% |
| pH Value (1% Aqueous Solution) | 6.0~8.0 |
| pH Value (5% Aqueous Solution) | 6.0~8.0 |
| Amine Value | 50~60 mg KOH/g |
| Tertiary Amine Content | ≥95% |
| Hydroxyl Value | About 98 mg KOH/g |
| Acid Value | ≤1 mg KOH/g |
| Iodine Value | ≤2 gI2/100g |
| Moisture | ≤0.5% |
| Density (25°C) | About 1.04 g/cm³ |
| Kinematic Viscosity (40°C) | About 200 mm²/s |
| Refractive Index (20°C) | About 1.460-1.470 |
| Melting Point | About 35°C |
| Flash Point | >200°C |
| Surface Tension (1% Solution, 25°C) | About 35 mN/m |
| Critical Micelle Concentration (CMC, 25°C) | About 60 mg/L |
| Penetration Power (Canvas Settlement Method) | >200 seconds |
| Foam Characteristics | Low foam |
| Solubility | Easily soluble in water and organic solvents |
| Heavy Metal Content | ≤10 mg/kg |
| Arsenic Content | ≤2 mg/kg |
| Packaging Specification | 50kg plastic drum / 200kg plastic drum / IBC tote |
Note: The above parameters are from the product database of Hai'an County Guoli Chemical Co., Ltd. and are measured typical values.
Based on the unique dual ion characteristics and high HLB value (15.4) of Octadecylamine Polyoxyethylene Ether AC-1820, it has wide application value in multiple industrial fields: