Methanesulfonic acid CAS#75-75-2
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Chemical Name: Methanesulfonic acid
CAS No.: 75-75-2
Molecular Formula: CH4O3S
Molecular weight: 96.11
Methanesulfonic acid: The Complete Guide
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Description of MSA
Methanesulfonic acid (MsOH) is a colorless liquid with the chemical formula CH3SO3H. It is the simplest of the alkylsulfonic acids. Salts and esters of methanesulfonic acid are known as mesylates (or methanesulfonates, as in ethyl methanesulfonate). It is hygroscopic in its concentrated form. Methanesulfonic acid may be considered an intermediate compound between sulfuric acid (H2SO4), and methylsulfonylmethane ((CH3)2SO2), effectively replacing an –OH group with a –CH3 group at each step. This pattern can extend no further in either direction without breaking down the –SO2– group. Methanesulfonic acid can dissolve a wide range of metal salts, many of them in significantly higher concentrations than in hydrochloric or sulphuric acid.
Basic Info of MSA
H290; H302 + H312; H314; H335
P301 + P312 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338
|Appearance & Physical State||Colorless to pale yellow liquid|
|Boiling Point||167ºC (10 torr)|
|Stability||Stable. Moisture sensitive. Incompatible with amines, bases, water, common metals. Releases a substantial amount of heat when diluted with water (add acid to water with care if diluting).|
|Storage Condition||Store in a tightly closed container. Keep under an argon blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.|
|Vapor Density||3.3 (vs air)|
|Vapor Pressure||1 mm Hg ( 20 °C)|
What is MSA?
With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is MSA which has developed particularly rapidly in recent years. Do you know about MSA?
The official answer: Methanesulfonic acid, an organic compound with the chemical formula CH4O3S, is soluble in water, alcohols, and ethers, insoluble in alkanes, benzene, toluene, etc. It does not decompose in boiling water or hot lye and has a strong corrosive effect on metals such as iron, copper, and lead.
What’s the application of MSA?
Methanesulfonic acid is a raw material for pharmaceuticals and pesticides and is also used as a dehydrating agent, paint curing accelerator, fiber treatment agent, solvent, and catalyst for recolonization, esterification, and polymerization reactions. Used as a catalyst. Used as a solvent, catalyst for alkylation, esterification, and polymerization reaction, also used in medicine and electroplating industry. Used as esterification catalyst, an alkylating agent, and for the oxidation reaction. Alkylation, esterification, and polymerization reaction catalyst. Solvent. Can be used in pharmaceutical intermediates, electroplating, organic synthesis intermediates. Used as solvent and catalyst for alkylation, esterification, and polymerization reactions, pharmaceutical intermediates, 70% concentration for electroplating.
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