Sodium Dodecylbenzene Sulfonate (SDBS)
CAS Number: 25155-30-0
Sodium dodecylbenzene sulfonate (SDBS) is a branched-chain anionic surfactant and emulsifier for emulsion polymerization, offering improved electrolyte tolerance and foam stability compared to SDS. It is widely used as the primary or co-emulsifier in acrylic, styrene-acrylic, and vinyl ester emulsion polymers, providing robust particle stabilization under process pH and electrolyte conditions.
Technical Specifications
| appearance | White to light yellow powder or flakes |
| moisture (%) | ≤5.0 |
| pH (1% solution) | 7.0–9.0 |
| active matter (%) | ≥88.0 |
| inorganic salt (%) | ≤5.0 |
Applications
- Acrylic and styrene-acrylic emulsion polymerization emulsifier
- Laundry and dishwashing detergent formulations
- Industrial degreasing and hard-surface cleaning concentrate
- Concrete admixture air-entraining agent base
- Textile scouring and dyeing auxiliary surfactant
Key Features
- Better electrolyte tolerance than SDS for polymerization in buffered or salt-containing systems
- Branched alkyl chain provides excellent wetting and penetration in textile scouring
- Versatile co-emulsifier compatible with nonionic surfactants for mixed emulsifier systems
- Good foam stability supports air-entraining applications in construction admixtures
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CAS Number
25155-30-0
Category
Polymer Synthesis ChemicalsAvailability
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