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2-METHYL-2-PROPENE-1-SULFONIC ACID SODIUM SALT

Name: 2-METHYL-2-PROPENE-1-SULFONIC ACID SODIUM SALT
SKU: 0

2-METHYL-2-PROPENE-1-SULFONIC ACID SODIUM SALT
CAS No.: 1561-92-8
Molecular Formula: 1561-92-8
Molecular Weight: 160.16

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PRODUCT DESCRIPTION

Sodium Methallylsulfonate (SMAS for short) is a functional monomer containing sulfonic acid groups. It is usually a white crystalline powder or granular crystal, and some products are white flaky. It has no obvious odor and its aqueous solution is transparent.

Chemical Properties

Property	Value
Melting point	>300 °C(lit.)
Density	1.59[at 20℃]
Vapor pressure	0Pa at 20℃
Storage temp.	Inert atmosphere,Room Temperature
Form	Powder to crystal
Color	White to Almost white
Water Solubility	523g/L at 20℃
InChI	InChI=1S/C4H8O3S.Na.H/c1-4(2)3-8(5,6)7;;/h1,3H2,2H3,(H,5,6,7);;
InChIKey	JJJRVJPTNNJLLQ-UHFFFAOYSA-N
SMILES	C(C(=C)C)S(O)(=O)=O.[NaH]
LogP	-3.74 at 20℃
CAS DataBase Reference	1561-92-8(CAS DataBase Reference)
EPA Substance Registry System	Sodium methallylsulfonate (1561-92-8)

Safety Information

Property	Value
Hazard Codes	Xi
Risk Statements	36/37/38-43
Safety Statements	26-36/37
WGK Germany	1
HS Code	2904.10.5000

Product Usage

Sodium methallyl sulfonate (SMAS), also known as 2-Methyl-2-propene-1-sulfonic acid sodium salt, is a highly effective functional monomer widely used in the synthesis of high-performance polymers. Its primary application is as a dyeing modifier in the production of acrylic fibers (polyacrylonitrile), where it significantly enhances the dye uptake and color brightness of the textile. In the construction industry, it is a key component for manufacturing high-efficiency polycarboxylic acid water reducers, improving the fluidity and strength of concrete. Furthermore, it serves as a crucial monomer in water treatment chemicals, acting as a scale inhibitor and dispersant to prevent mineral buildup in cooling systems. Its unique sulfonic acid group also makes it valuable in the production of specialized oilfield chemicals for enhanced oil recovery.

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