Methanesulfonic acid
Synonyms: SULFOMETHANE;MSA;acidemethanesulfonique;Kyselina methansulfonova;kyselinamethansulfonova;Methylsulphonicacid;Sulphonethane;METHANESULFONIC ACID
CAS: 75-75-2
MF: CH4O3S
MW: 96.11
EINECS: 200-898-6
Melting point 19 °C
Boiling point 167 °C10 mm Hg(lit.)
density 1.481 g/mL at 25 °C(lit.)
vapor density 3.3 (vs air)
vapor pressure 1 mm Hg ( 20 °C)
refractive index n20/D 1.429(lit.)
Fp >230 °F
storage temp. 2-8°C
color brown
Sensitive Light Sensitive & Hygroscopic
Merck 14,5954
Chemical properties It appears as colorless or slightly brown oily liquid, appearing as solid at low temperatures. It has a melting temperature of 20 °C, the boiling point of 167 °C (13.33 kPa), 122 °C (0.133 kPa), the relative density of 1.4812 (18 ℃) and refractive index 1.4317 (16 ℃). It is soluble in water, alcohol and ether, insoluble in alkanes, benzene and toluene. It will not subject to decomposition in boiling water and hot alkaline solution. It also has strong corrosion effect against the metal iron, copper and lead.
Uses Methanesulfonic acid is a raw material for medicine and pesticide. It can also be used as dehydrating agent, curing accelerator for coating, treating agent for fiber, solvent, catalysis, and esterification as well as polymerization reaction.
It can be used as solvent, alkylation, catalyst of esterification and polymerization, also used in medicine and electroplating industry. It can also be applied to oxidation.