Sodium Allyl Sulfonate (SAS/ALS) – CAS 2495-39-8

Sodium Allyl Sulfonate (SAS/ALS) – CAS 2495-39-8

Properties & Specifications

Basic Identification

PropertyDetail
CAS Number2495-39-8 
Molecular FormulaC₃H₅NaO₃S 
Molecular Weight144.12 – 144.13 g/mol 
EINECS219-676-5 
MDL NumberMFCD00051416 
IUPAC NameSodium prop-2-ene-1-sulfonate 
SynonymsSAS, ALS, Sodium 2-Propene-1-sulfonate, Allylsulfonic Acid Sodium Salt 

Physical & Chemical Properties

PropertyValue
AppearanceWhite crystalline powder or white to almost white powder/crystals ; also available as 25% or 35% aqueous liquid (colorless to yellowish) 
Melting Point242 °C (decomposes) 
Density1.206 (solid); 1.20–1.26 for liquid grades 
Water Solubility714 g/L at 20 °C; also soluble in Methanol and DMF 
Log P-3.5 (at 20°C) 
Vapor Pressure0 Pa at 25 °C 
pH (1% solution)6.1 (solid); 7.0–9.0 (liquid grades) 

Purity & Quality Specifications

ParameterSpecification
Purity (solid)≥85.0% (TCI) ; ≥95% (commercial) 
Purity (liquid)25% or 35% aqueous solution 
Water Contentmax. 5.0% 
Chloride Contentmax. 1.5% 
Sodium Sulfitemax. 0.2% 
Iron Contentmax. 0.0003% 

Storage & Stability

ConditionRecommendation
Storage TemperatureRoom temperature, cool and dark place (<15°C) 
AtmosphereInert gas recommended (hygroscopic) 
StabilityStable. Incompatible with strong oxidizing agents. Aqueous solutions may polymerize upon prolonged heating; dry product is thermally stable 

Safety Information

Hazard CodesXi, N 
Risk StatementsR36/37/38 (Irritating to eyes, respiratory system, and skin) 
Safety StatementsS24/25 (Avoid contact with skin and eyes) 
TSCA StatusListed 
HS Code29041000 

Applications

  • Electroplating: Basic brightener and auxiliary brightener in nickel plating baths; improves throwing power and ductility of metal deposits 
  • Polymer Industry: Third monomer for acrylic fibers to improve dyeability, heat resistance, and elasticity 
  • Water Treatment: Monomer for scale inhibitors and corrosion inhibitors 
  • Construction: Polycarboxylate superplasticizer component for concrete 
  • Oilfield Chemicals: Drilling mud additive 
  • Pharmaceutical Intermediates 

Please tell us your needs



More Products

More Related Content