Surfactants
REACH
Alkyl benzene sulfonic acid
CAS Number
85536-14-7
What is Alkyl benzene sulfonic acid?
Alkyl benzene sulfonic acid (CAS 85536-14-7), also known commercially as benzenesulfonic acid 4-C10-13-sec-alkyl derivs., is a high-activity anionic surfactant acid used as a precursor to sulfonate salt surfactants.
Where is Alkyl benzene sulfonic acid used?
- Home care and industrial cleaning: neutralized with caustic soda or MEA to produce linear alkylbenzene sulfonates (LAS), the primary surfactant in liquid and powder detergents
- Acidic cleaning formulations: direct active ingredient for wetting, emulsification and degreasing
- Textile processing: scouring and dyeing auxiliaries that improve fiber wetting and dye dispersion uniformity
- Coatings and adhesives: dispersing agent and emulsifier for pigment grinding
- Industrial degreasers and hard-surface cleaners incorporate it directly.
Commercial specifications
- 96–98% active content
- Purity and active matter confirmed by standard titration methods
- Bulk supply in ISO tanks, drums and IBCs
Other Names (Synonyms)
Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs.
What are the physical properties of Alkyl benzene sulfonic acid?
Melting Point 10 °C
Boiling Point 82 °C
Density 1.06 g/mL at 20 °C(lit.)
Flash Point 85 °F
Appearance Brown viscous liquid
Color Brown
Odor Pungent or sulfuric odor
Form Viscous Liquid
Water Solubility 139g/L at 20℃
Vapor Pressure 0Pa at 25℃
Refractive Index n 20/D 1.51
Log P 2.2 at 23℃
Which trade and regulatory codes apply to Alkyl benzene sulfonic acid?
HS Code 29041000
UN Number 2924
ADR Class 3
Packing Group III
WGK (Germany) 2