Description
What is Sodium Dodecyl Sulfate CAS 151-21-3
Sodium Dodecyl Sulfate CAS 151-21-3 is an organic compound in the form of white or yellowish powder, easily soluble in water, with particularly strong foaming power, decontamination and emulsification ability.
Chemical Properties
| Property | Value or Description |
| Chemical Formula | C₁₂H₂₅SO₄Na |
| Molecular Weight | 288.38 g/mol |
| Appearance | White or pale yellow powder or granular solid |
| Melting Point | 206–207°C (decomposes) |
| Density | 1.01 g/cm³ (solid, at 20°C) |
| Solubility | Soluble in water (150 g/L at 20°C) |
| Critical Micelle Concentration (CMC) | 0.2–0.3 g/L (in water, at 25°C) |
| Surface Tension | ~25 mN/m (at critical micelle concentration) |
| pH (1% solution) | 7–9 |
| Toxicity | Low toxicity but may cause skin and mucosal irritation |
| Uses | Surfactant, detergent, foaming agent |
Application
1、Personal care products: such as shampoo, body wash, toothpaste, as cleaning agents and foaming agents.
2、Detergents: used in household and industrial cleaning products to remove grease and dirt. 3、Food industry: used as emulsifiers and stabilizers (there are restrictions on their use).
4、Pharmaceuticals and laboratories: used in pharmaceutical preparations, protein analysis (such as SDS-PAGE) and cell lysis.
5、Other industries: used as emulsifier or dispersant in textile, pesticide and other industries.
Packing
25kgs/drum, 9tons/20’container
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