Sodium Dodecyl Sulfate (SDS)
CAS Number: 151-21-3
Sodium dodecyl sulfate (SDS), also known as sodium lauryl sulfate (SLS), is the benchmark anionic surfactant and emulsifier for emulsion polymerization. It stabilizes monomer droplets and latex particles through electrostatic repulsion, controlling particle size and latex stability. SDS is also a primary emulsifier in personal care, pharmaceuticals, and detergent formulations.
Technical Specifications
| appearance | White to off-white powder or needles |
| purity (%) | ≥95.0 |
| moisture (%) | ≤5.0 |
| pH (1% solution) | 7.5–9.5 |
| active matter (%) | ≥95.0 |
Applications
- Emulsion polymerization of acrylic, VAE, and SBR latex
- Shampoo, toothpaste, and body wash surfactant
- Pharmaceutical tablet and cream formulation surfactant
- Analytical electrophoresis (SDS-PAGE) denaturing agent
- Industrial emulsion and foaming cleaning agent
Key Features
- High CMC solubility enables efficient micelle formation for small-particle-size latex
- Benchmark electrostatic stabilizer with well-characterized performance in emulsion polymerization
- Readily available in both powder and solution grades for flexible process integration
- Broad regulatory acceptance (Halal, Kosher, EP/USP) for multi-sector application
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CAS Number
151-21-3
Category
Polymer Synthesis ChemicalsAvailability
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