Overview
Sodium lauryl sulfate (CAS 151-21-3 ), commonly abbreviated as SLS and designated E487 , is an anionic surfactant used across personal care, food, and industrial manufacturing.
It delivers reliable foaming, emulsification, and detergency across a broad range of formulated products. In personal care, SLS is the primary foaming and cleansing agent in toothpastes and shampoos.
It is also used in body washes, where consistent lather and soil removal are formulation requirements. Food-grade applications include use as an emulsifier and whipping aid in egg-white products.
It is used in marshmallow confections under the E487 designation. Textile and leather processors use it as a wetting and scouring agent to improve dye penetration and remove surface contaminants.
In industrial cleaning and printing, it functions as a dispersant and degreaser in press-wash compounds and hard-surface cleaners. SLS is supplied as a white to off-white powder or needle.
Flake, liquid, and paste forms are also available for specific processing requirements. Standard grades include USP , BP , Ph. Eur. , and FCC for pharmaceutical and food applications.
Technical grade is also available for industrial use. Concentration in liquid or paste form typically ranges from 28% to 35% active content, ensuring high performance in diverse chemical formulations.
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Physical Properties
| Melting Point | 204-207 °C |
| Density | 1.01 g/cm³ |
| Flash Point | >100°C |
| Appearance | White crystalline flakes |
| Color | White to pale yellow |
| Odor | Slight fatty odour |
| Form | Powder or Crystals |
| Water Solubility | ca. 150 g/L (20 ºC) |
| pH | 6-9 (10g/l, H2O, 20℃) |
| Log P | 1.600 |
Safety & Handling
Danger GHS02 GHS05 GHS07 GHS06 GHS08 GHS09 Hazard Statements H228 Flammable solid H302 Harmful if swallowed H310 Fatal in contact with skin H311 Toxic in contact with skin H312 Harmful in contact with skin H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H332 Harmful if inhaled H335 May cause respiratory irritation H370 Causes damage to organs H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H401 Toxic to aquatic life H412 Harmful to aquatic life with long lasting effects Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. 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. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. 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.
Trade & Regulatory
| HS Code | 29209010 |
| UN Number | 2926 |
| ADR Class | 4.1 |
| Packing Group | II |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 151-21-3
- EC Number
- 205-788-1
- Mol. Weight
- 288.38
- HS Code
- 29209010
- Category
- Salts & Minerals