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Sodium methallylsulfonate

CAS Number
1561-92-8
EC Number
216-341-5
Chemical Formula
C4H8O3S.Na
Molecular Weight
158.15 g/mol

Description

Sodium methallylsulfonate (CAS 1561-92-8 ), commonly abbreviated as SMAS, is a reactive sulfonate monomer used as a functional comonomer in polymer synthesis. It introduces anionic sulfonate groups into polymer backbones. This chemical enables targeted performance modifications in industrial formulations. In water treatment, SMAS is copolymerized into scale inhibitors and dispersants that prevent mineral deposition in cooling towers. These industrial water systems benefit from the enhanced stability provided by the monomer. Textile and paper processing operations use SMAS-based polymers to improve dye uptake and fiber affinity. The monomer also improves surface sizing performance in paper manufacturing. In the plastics and polymers sector, it is incorporated into acrylic and vinyl copolymers to enhance colloidal stability. This improves electrolyte tolerance in emulsion systems during production. Leather processing also employs SMAS-derived polymers as retanning and dispersing agents for better results. These agents improve the penetration and uniformity of treatment across the material. Sodium methallylsulfonate is typically supplied as a white crystalline powder or as an aqueous solution. Standard concentrations are available, and the Technical grade is the primary commercial specification for industrial buyers. It is offered in bulk quantities suited to polymer manufacturing. Packaging options range from bags to intermediate bulk containers to meet logistics needs. This versatile monomer remains a critical component for high-performance anionic polymer production. Contact us for supply of Sodium methallylsulfonate Request Quote

Other Names (Synonyms)

Methallyl sulfonate | Sodium 2-methylprop-2-ene-1-sulphonate | ARA0T9ZU4A | RefChem:156852 | sodium methylallyl sulfonate | Sodium 2-methylprop-2-ene-1-sulfonate | 2-Propene-1-sulfonic acid, 2-methyl-, sodium salt (1:1) | SMAS

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point>300 °C(lit.)
Density1.59[at 20℃]
ColorWhite to Almost white
Formpowder to crystal
Water Solubility523g/L at 20℃
Vapor Pressure0Pa at 20℃
Log P-3.74 at 20℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code2904.10.5000
Storage Class11 - Combustible Solids
WGK (Germany)1