Sodium lauroyl methyl isethionate (SLMI, CAS 928663-45-0) is a mild anionic surfactant derived from lauric acid and isethionic acid. It delivers rich, creamy foam with very low skin irritation for facial cleansers, body washes, shampoos and baby care products.
Specifications
| Parameter | Value |
|---|---|
| Appearance | White chips |
| Activity (MW=344) (%) | 79.00 Min |
| Free fatty acid (MW=200) (%) | 7.00 Max |
| pH (10% in demin. water, 35 °C) | 5.50-7.00 |
| Color (5% in isopropanol/water) | 25 Max |
| Water (%) | 1.00 Max |
Applications
- Facial cleansers and foaming washes – mild, creamy lather.
- Body washes, shampoos and baby care – low irritation profile.
- Syndet and beauty bars as a co-surfactant.
Storage and Packaging
Store sealed, cool and dry, away from humidity and heat. Standard packaging: 25 kg multi-layer bags or cartons with PE liner.
FAQ
Is SLMI sulfate-free? Yes, it contains no alkyl sulfate group and qualifies for sulfate-free claims.
How mild is SLMI? Its isethionate head binds weakly to skin proteins, making it one of the mildest foaming anionics, suitable for baby and sensitive-skin products.
See the full guide for chemistry, manufacturing technology and applications.
