Polyethylene Glycol Distearate 400DS is a nonionic surfactant prepared by the esterification condensation of polyethylene glycol 400 (PEG-400) with stearic acid (C₁₇H₃₅COOH). Its general chemical structure is C₁₇H₃₅COO(C₂H₄O)ₙOCC₁₇H₃₅, where the degree of polymerization n is approximately 8~12, and the molecular weight of the product is about 930. The CAS number is 9005-08-7.
From a chemical composition perspective, according to actual test data from Guoli Chemical, the diester content of this product is as high as ≥90%, the monoester content is controlled at ≤5%, and the free alcohol content is ≤1%, making it a high-purity distearate product. Its appearance is a white to slightly yellow waxy solid, with a melting point between 40~50°C. It is dispersible in water and soluble in organic solvents such as ethanol and isopropanol.
As a nonionic emulsifier, its ionic type is "nonionic," with an HLB value of approximately 7.5. It maintains stable performance over a wide pH range and in hard water environments, and exhibits excellent chemical compatibility, allowing smooth compounding with anionic, cationic, and amphoteric systems. This is a core foundation for its widespread application in multi-industry formulations.
| Parameter Item | Value/Specification | Parameter Item | Value/Specification |
|---|---|---|---|
| Active ingredient content | ≥99% | Diester content | ≥90% |
| Monoester content | ≤5% | Free alcohol content | ≤1% |
| Iodine value | ≤1 | Acid value | ≤5 mgKOH/g |
| Saponification value | 110~130 mgKOH/g | Hydroxyl value | ≤5 mgKOH/g |
| Moisture | ≤1.0% | pH value (1% aqueous solution) | 5.0~7.0 |
| HLB value | 7.5 | Melting point | 40~50°C |
| Molecular weight | Approximately 930 | Density | Approximately 0.95 g/cm³ |
| Ionic type | Nonionic | Appearance | White to slightly yellow waxy solid |
Based on its high diester content and nonionic characteristics, this product has mature formulation applications in the following areas:
This product is not classified as a GHS hazard. Under normal use conditions, it is non-irritating to the skin. However, during operation, avoid direct contact of dust with eyes to prevent mechanical irritation. The storage temperature is recommended to be controlled at 5°C~40°C, keep the container sealed and moisture-proof, and keep away from strong oxidizers. The product is chemically stable under normal storage conditions; it is prohibited to mix store or transport with strong oxidizers.