The physicochemical technical parameters of Stearylamine Polyoxyethylene Ether AC-1802 (CAS: 26635-92-7) cover core data such as basic physical properties, chemical indicators, and surface activity. The following contents are all derived from the product database of Guoli Chemical.
Detailed Description
Stearylamine Polyoxyethylene Ether AC-1802, chemically named N,N-Bis(2-hydroxyethyl)stearylamine, has the molecular formula C22H47NO2 and a molecular weight of 357.6. This product is a nonionic surfactant prepared by ethoxylation reaction using stearylamine as a starting agent. It appears as a white to slightly yellow waxy solid at room temperature, with a melting point of 45~50°C. Its molecular structure contains both ether bonds and tertiary amine groups, endowing it with unique interfacial activity and multifunctional application potential—exhibiting nonionic characteristics under neutral and alkaline conditions, and converting to cationic type after amine group protonation in acidic systems.
Due to its HLB value of only 4.5, this product has strong lipophilicity and limited dispersibility in water (dispersible in cold water, soluble in hot water and organic solvents), but it performs excellently in emulsification, dispersion, and antistatic applications. The product has a surface tension of 30 mN\/m and a critical micelle concentration (CMC) of 1×10-4 mol\/L, enabling efficient interfacial regulation at very low dosages, making it a high-quality water-in-oil emulsifier and industrial dispersant intermediate.
Technical Parameters
I. Basic Physicochemical Properties
| Parameter Item | Specification\/Value |
|---|
| CAS Number | 26635-92-7 |
| Molecular Formula | C22H47NO2 |
| Molecular Weight | 357.6 |
| Appearance (25°C) | White to slightly yellow waxy solid |
| Ionic Type | Nonionic (cationic under acidic conditions) |
| Melting Point | 45~50°C |
| Density (25°C) | 0.95 g\/cm³ |
| Flash Point | >200°C |
| Refractive Index | Not available |
| Kinematic Viscosity | Not applicable (solid) |
| Hygroscopicity | Slightly hygroscopic |
II. Surface Activity Parameters
| Parameter Item | Specification\/Value |
|---|
| HLB Value | 4.5 |
| Cloud Point | 40~50°C |
| Surface Tension | 30 mN\/m |
| Critical Micelle Concentration (CMC) | 1×10-4 mol\/L |
| Foaming Property | Low foam |
| Penetration Power | Not available |
| Alkali Resistance | Stable |
| Chemical Stability | Stable under normal temperature and pressure |
III. Chemical Indicators
| Parameter Item | Specification\/Value |
|---|
| Active Content | ≥99% |
| Solid Content | ≥99% |
| pH Value (1% Aqueous Solution) | 6.0~8.0 |
| pH Value (5% Aqueous Solution) | 6.0~8.0 |
| Moisture | ≤1.0% |
| Amine Value | 150~165 mgKOH\/g |
| Tertiary Amine Content | ≥95% |
| Hydroxyl Value | 310~320 mgKOH\/g |
| Acid Value | ≤2 mgKOH\/g |
| Iodine Value | ≤1 gI2\/100g |
| Saponification Value | None |
| Unsaturation | ≤0.1 |
| Free Alcohol | ≤0.5% |
| Free Phosphoric Acid | None |
| Monoester Content (Phosphate) | None |
| Diester Content (Phosphate) | None |
| Combined Phosphorus | None |
| Monoester Content | None |
| Diester Content | None |
IV. Solubility Performance
| Parameter Item | Specification\/Value |
|---|
| Solubility | Soluble in hot water and organic solvents, dispersible in cold water |
V. Quality and Safety Related Indicators
| Parameter Item | Specification\/Value |
|---|
