Stearic Acid Polyoxyethylene Ether SG-6 (also known as PEG-6 Stearate, Polyethylene Glycol Stearate, Emulsifier SG-6) is a classic nonionic surfactant produced by Haian Guoli Chemical Co., Ltd. The product appears as a white to slightly yellowish waxy solid or flake, which can be dispersed or dissolved in water, and also soluble in organic solvents such as ethanol. Its molecular structure contains both hydrophilic polyoxyethylene chains and lipophilic stearate ester groups, endowing the product with balanced hydrophilic and lipophilic characteristics.
This product has an extremely low critical micelle concentration (CMC), enabling it to efficiently emulsify various animal and vegetable oils and mineral oils, forming a stable and fine emulsifying system. Meanwhile, its strong wetting ability can rapidly reduce the dynamic surface tension of the working fluid, providing excellent instant wetting and spreading effects. Under acidic, alkaline, and hard water conditions, this product maintains stable nonionic activity without saponification or hydrolysis, and can be compounded with anionic, cationic, and amphoteric surfactants for synergistic effects without antagonism, greatly expanding the formulation design flexibility.
From a safety perspective, this product is classified as low toxicity (rat oral LD50 > 2000 mg/kg), non-irritating to skin (PII < 0.5), non-sensitizing, readily biodegradable (OECD 301B, 28-day degradation > 60%), with low impact on the aquatic environment, aligning with the green chemical development trend.
| Parameter Item | Parameter Index |
|---|---|
| Chemical Name | Polyoxyethylene (6) Stearate |
| CAS Number | 9004-99-3 |
| Product Type | Nonionic Surfactant |
| Appearance | White to Slightly Yellowish Waxy Solid or Flake |
| Solubility | Dispersible or Soluble in Water, Soluble in Organic Solvents such as Ethanol |
| Flash Point (Closed Cup) | > 150°C |
| Flammability | Non-flammable |
| HLB Value | Not Available |
| Cloud Point | Not Available |
| Hydroxyl Value | Not Available |
Textile Dyeing and Finishing: As a core component of softeners and antistatic agents, it adsorbs onto fiber surfaces, imparting a soft and fluffy hand feel to fabrics and eliminating static buildup. It is recommended for use in the finishing process, with dosage optimized according to fabric type and process requirements.
Cosmetics Industry: Used for emulsification and solubilization in skin care products such as creams and lotions, stabilizing oil and water phases, providing a light skin feel, and also serving as a solubilizer for fragrances and fat-soluble active ingredients.
Pesticide Formulations: As an emulsifier, it stably disperses pesticide active ingredients in water to form a uniform emulsion, enhancing the wetting and spreading ability of the spray solution on plant leaves, improving efficacy and reducing active ingredient loss.
Industrial Cleaning: Provides excellent detergency and penetration in metal degreasing and precision cleaning formulations, rapidly emulsifying grease and oil on metal surfaces, suitable for cleaning mechanical parts, pipelines, and production lines.
Metalworking Fluids: Used in formulating cutting fluids and grinding fluids, forming a lubricating film on metal surfaces to reduce friction and heat during processing, while also providing anti-rust and cooling properties.
Paper Deinking: Effectively strips and disperses printing ink particles during waste paper recycling, preventing ink redeposition, and improving the whiteness and cleanliness of recycled pulp.