Polyoxyethylene stearate SG-10 (PEG-10 stearate) is a white to slightly yellow solid or paste (melting point 35-40°C), classified as a nonionic surfactant with an HLB value of approximately 13.5. It is easily soluble in water, ethanol, acetone, and other organic solvents. In practical use, because it is solid or paste at room temperature, it is recommended to heat it to 40-50°C to melt or soften it first, then mix it evenly with the oil phase components, followed by conventional O/W emulsification for homogenization. This product has good compatibility with anionic, cationic, and nonionic surfactants and can be used in combination to achieve synergistic effects.
SG-10 primarily acts as an O/W emulsifier, wetting dispersant, and stabilizer in formulations. Its polyoxyethylene chain provides hydrophilicity, while the stearate ester group provides lipophilicity. Together, they effectively reduce the oil-water interfacial tension, forming a stable and fine emulsion system. The product is resistant to acids, alkalis, and hard water, exhibiting excellent chemical stability, and its low-foaming property minimizes foam-related issues in industrial applications.
Since the specific recommended dosages for various application fields are not yet included in the product database of Guoli Chemical, the following dosage suggestions are general industry reference ranges. The optimal actual dosage should be determined through small-scale experiments to meet the performance requirements of the specific formulation.
| Parameter | Value |
|---|---|
| Appearance (25°C) | White to slightly yellow solid/paste |
| Ionic Type | Nonionic |
| HLB Value | 13.5 |
| Melting Point | 35-40°C |
| Active Content | ≥99% |
| 1% Aqueous Solution pH | 5.0-7.0 |
| Cloud Point | 45-55°C |
| Surface Tension | Approx. 31 mN/m |
| Critical Micelle Concentration (CMC) | Approx. 0.06% |
| Foam Characteristics | Low Foaming |
| Monoester Content | ≥95% |
| Saponification Value | 85-95 mgKOH/g |
| Acid Value | ≤2 mgKOH/g |
Reference dosage for various application fields (general industry range, source: industry empirical data, not from product database):
| Application Field | Recommended Dosage (wt%) | Usage Instructions |
|---|---|---|
| Cosmetic Cream/Lotion (O/W Type) | 0.5%-5% | Heat mix with oil phase, then emulsify with hot water phase |
| Makeup Remover/Cleansing Cream | 1%-3% | Add to oil phase, stir evenly, then emulsify |
| Textile Softener | 0.5%-3% (o.w.f.) | Dissolve in hot water above 40°C, then add to bath |
| Textile Antistatic Agent | 0.2%-1% (o.w.f.) | Apply by padding or spraying |
| Industrial Detergent | 0.5%-3% | Use in combination with other surfactants |
| Metalworking Cutting Fluid (Concentrate) | 1%-5% | Add to oil phase as emulsifier component |
| Pesticides Emulsifiable Concentrates (EC) | 5%-15% | Mix evenly with pesticide technical and solvent |
| Emulsion Polymerization | 1%-4% (based on monomer) | Add as stabilizer during pre-emulsification stage |
| Leather Fatliquoring Agent | 1%-3% | Add to oil phase components, heat and mix evenly |
| Waterborne Paint Dispersant | 0.2%-1% | Add during grinding and dispersion stage |
In practice, since SG-10 is solid at room temperature, it is recommended to preheat it in a 40-50°C water bath to melt, or add it directly to the heated oil phase and stir until dissolved. The emulsification process can adopt the post-addition method or the agent-in-oil method. The homogenization temperature and speed should be optimized according to the specific system, with a general recommendation to control the emulsification temperature at 60-75°C.