Stearic Acid Polyoxyethylene Ether SG-6, full name Polyoxyethylene (6) Stearate, CAS number 9004-99-3, is a non-ionic surfactant produced by Haian Guoli Chemical Co., Ltd. The product appears as a white to slightly yellow waxy solid or flake, with a molecular formula of approximately C18H35O2(OCH2CH2)nOH (n≈6) and an average molecular weight of about 548. Due to the presence of both hydrophilic polyoxyethylene chains and lipophilic stearic acid chains in its structure, it exhibits balanced emulsifying capability in oil/water systems.
This product has an HLB value of approximately 9.7 and a cloud point of 28-32°C, indicating good water dispersibility and interfacial activity near room temperature. Its active content is as high as 99% or more, and the monoester content is not less than 95%, ensuring stable product quality and excellent application effects. SG-6 also has high tolerance to chemical environments, maintaining stable non-ionic activity in acidic, alkaline media, and hard water conditions, without saponification or hydrolysis, and can be well compounded with anionic, cationic, and amphoteric surfactants.
| Parameter | Specification |
|---|---|
| Chemical Name | Polyoxyethylene (6) Stearate |
| CAS Number | 9004-99-3 |
| Appearance | White to slightly yellow flakes or blocks |
| Ionic Type | Non-ionic |
| HLB Value | 9.7 |
| Cloud Point | 28-32°C |
| Active Content | ≥99% |
| pH Value (1% Aqueous Solution) | 5.0-7.0 |
| Melting Point | 32-36°C |
| Acid Value | ≤2 mg KOH/g |
| Saponification Value | 100-110 mg KOH/g |
| Hydroxyl Value | 90-100 mg KOH/g |
| Monoester Content | ≥95% |
| Moisture Content | ≤0.5% |
| Flash Point (Closed Cup) | >180°C |
| Density | Approx. 0.98 g/cm³ |
Stearic Acid Polyoxyethylene Ether SG-6, with its excellent emulsifying and wetting properties, is widely used in various industries. In the textile and dyeing field, it can be used as a softener and antistatic agent, effectively improving fabric hand feel and eliminating static electricity during processing. In the cosmetics industry, as an emulsifying solubilizer for creams and lotions, it provides a light and delicate skin feel, enhancing compatibility with fragrances and fat-soluble active ingredients. In pesticide formulations, as an emulsifier, it ensures uniform dispersion of the active ingredient in water-based formulations, helping to improve the spreading ability of the liquid on plant leaves.
Additionally, in industrial cleaning, SG-6 quickly penetrates and emulsifies oil stains on metal surfaces and equipment, significantly improving decontamination and degreasing efficiency. In metalworking fluids, it acts as an emulsifying lubricating component, forming an effective lubricating film to reduce processing friction, while also providing anti-rust and cooling functions. In the paper industry, as a component of deinking agents for waste paper, it helps efficiently strip and disperse ink particles, improving the whiteness and cleanliness of recycled pulp.