Overview
Sodium lauryl polyoxyethylene ether sulfate (CAS 9004-82-4 ), commercially known as SLES, is an anionic surfactant used across personal care, textile, and industrial cleaning applications.
It delivers high-foaming, emulsifying, and degreasing performance at competitive cost, making it one of the most commercially traded surfactants globally for various manufacturing sectors.
In personal care manufacturing, SLES is the primary foaming and cleansing agent in shampoos, body washes, liquid soaps, and facial cleansers, where its mildness supports consumer-grade formulations.
Textile processors use it as a scouring and wetting agent to remove oils, waxes, and sizing agents from fiber prior to dyeing or finishing to ensure high-quality results.
In leather processing, it assists in degreasing hides during beam house operations to ensure uniform tanning penetration. Industrial formulators incorporate it into hard surface cleaners and laundry detergents.
SLES is supplied as a clear to slightly hazy aqueous liquid, most commonly at 70% active content, with 28% also available for applications requiring easier handling or lower viscosity.
Grades are differentiated by ethoxylation degree, typically 2 EO or 3 EO, which affects mildness and cold-water solubility. Technical and cosmetic-grade specifications are both standard in the market.
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Physical Properties
| Appearance | solid |
| Color | Clear viscous |
| Odor | Odorless |
| Form | Liquid |
| Log P | 5.405 (est) |
Safety & Handling
Danger GHS05 GHS07 GHS08 GHS09 Hazard Statements H302 Harmful if swallowed H304 May be fatal if swallowed and enters airways H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H371 May cause damage to organs Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P321 Specific treatment (see … on this label). P330 Rinse mouth. P331 Do NOT induce vomiting. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Other Names
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Chemical Properties
- CAS Number
- 9004-82-4
- EC Number
- 933-296-3
- Mol. Weight
- 332.43
- Category
- Surfactants