SLS (Sodium Lauryl Sulfate)

Sodium Lauryl Sulfate (SLS) – High-Foam Surfactant for Cleansing & Personal Care

Sodium Lauryl Sulfate (SLS) is a widely-used anionic surfactant known for its ability to create rich foam and remove oils and debris from skin and hair. It is found in a variety of personal care and cleaning products including shampoos, body washes, facial cleansers, toothpaste, and detergents. Due to its strong cleansing power, SLS is especially valued in formulations where high foam and deep cleaning are required. It may be harsh on sensitive skin if used in high concentrations, so proper formulation is important for mildness.

📊 Technical Data:

INCI Name: Sodium Lauryl Sulfate

CAS Number: 151-21-3

Solubility: Water-soluble

Add Phase: Heated water phase

pH Stability: 5.5 – 7.5

Processing Temperature: 45–60°C

Appearance: White/off-white powder or needles

Odor: Mild characteristic odor

Molecular Formula: C₁₂H₂₅NaO₄S

Molecular Weight: ~288.38 g/mol

Flash Point: Not applicable (non-flammable solid)

Density: ~0.3 g/cm³ (bulk)

Chemical Type: Anionic surfactant

Functional Groups: Sulfate ester, alkyl chain

Primary Cosmetic Uses: Shampoos, toothpaste, cleansers, body washes, soaps