Stearic Acid Polyoxyethylene Ether SG-10 (CAS No.: 9004-99-3), chemical name Polyoxyethylene (10) Stearate, also known as Emulsifier SG-10, PEG-10 Stearate. It appears as a light yellow paste to solid and belongs to nonionic surfactants. Its molecular structure contains a hydrophilic polyoxyethylene chain segment and a lipophilic stearate group, endowing the product with excellent surface activity and wide application adaptability due to this unique "amphiphilic" structure.
In terms of performance, this product has excellent emulsifying ability, especially suitable for the preparation and stabilization of O/W (oil-in-water) emulsion systems; good wetting and dispersing properties can effectively reduce interfacial tension; it shows excellent chemical stability in acidic, alkaline, and hard water media; it has good compatibility with various anionic, cationic, and nonionic surfactants; and it is mild and non-irritating, with high safety in use, and a 5% dilution is non-irritating to the skin.
In terms of safety and environmental protection, this product is low-toxic (rat acute oral LD50 > 5,000 mg/kg), non-irritating to the skin and non-sensitizing, negative in Ames test, and non-genotoxic. In terms of biodegradability, the degradation rate exceeds 60% under OECD 301B conditions for 28 days, making it readily biodegradable and environmentally friendly.
1. Cosmetics and Personal Care Products
As a high-efficiency O/W emulsifier, it is used in the preparation of creams and lotions to uniformly disperse oil phase components in the water phase, forming a stable and fine texture, imparting good spreadability and skin feel to the product. It can also be used in cleansing products such as makeup removers and facial cleansers, both for emulsification and mild cleansing.
2. Textile Printing and Dyeing Auxiliaries
Used as a leveling agent to promote uniform dye uptake onto fibers, preventing color spots and streaks; used as a softening agent to impart a soft and smooth hand feel to fabrics; used as an antistatic agent to reduce surface resistance of fibers and minimize static buildup; also used as a soaping agent in the after-printing soaping process to remove unfixed dyes, improving color fastness and preventing white ground staining.
3. Industrial and Household Detergents
In industrial cleaners, it enhances the emulsification, dispersion, and removal of oily soils; in household laundry liquids, dishwashing detergents, etc., it serves as a co-emulsifier and detergency booster, improving low-temperature washing performance.
4. Metalworking Fluids
As an emulsifier and stabilizer for emulsified cutting oils, it enables the base oil to form a stable working fluid with water, providing good lubrication and cooling performance; it can also be used in rust preventive fluids to help distribute anti-rust additives evenly.
5. Pesticide Emulsifiers
As a core emulsification component in pesticide emulsifiable concentrates, it ensures that the pesticide active ingredient can be quickly and stably dispersed in water when diluted for use, forming a uniform emulsion to guarantee efficacy.
6. Emulsion Polymerization Stabilizers
As an emulsifying stabilizer in emulsion polymerization processes such as acrylic and styrene-acrylic, it controls micelle formation and particle size distribution, improving polymerization stability and the storage stability of the final emulsion.
7. Leather Chemicals
As an emulsifying component in fatliquors, it helps oils penetrate into leather fibers, making leather soft and plump; it can also be used in degreasing processes to effectively remove natural fats from hides.
8. Paint Dispersants
In water-based paints, it assists in the wetting and dispersion of pigments and fillers, preventing particle flocculation and sedimentation, improving the storage stability and application properties of the paint.
| Parameter | Value |
|---|---|
| Product Name | Stearic Acid Polyoxyethylene Ether SG-10 |
| Chemical Name | Polyoxyethylene (10) Stearate |
| CAS No. | 9004-99-3 |
| Ionic Type | Nonionic |
| Appearance | Light yellow paste to solid |
| HLB Value | Not available (not provided in database) |
| Cloud Point | Not available (not provided in database) |
| Acute Oral Toxicity (Rat) | LD50 > 5,000 mg/kg (Low toxicity) |
| Skin Irritation | 5% dilution non-irritating (PII 0–0.5) |
| Eye Irritation | Pure product slightly irritating (reversible) |
| Sensitization | Non-sensitizing |
| Genotoxicity | Ames test negative, non-genotoxic |
| Biodegradability | Readily biodegradable (OECD 301B, 28 days >60%) |
| Fish Acute Toxicity | 96h LC50 > 100 mg/L |