CAS No.: | 75-75-2 |
Molecular Weight: | 96.11 g/mol |
Chemical Formula | CH43S |
Methanesulfonic acid or MSA or Methanesulphonic acid or Mesylate is a hygroscopic colorless liquid or white solid, depending on whether the ambient temperature is greater or less than 20C. It is very soluble in water and oxygenated solvents, but sparingly soluble in most hydrocarbons. In aqueous solution, it is a strong acid. Methanesulfonic acid is used as catalyst in esterification, alkylation, olefin polymerization, peroxidation reactions. Methanesulfonic acid is a green acid with a remarkably high solubility for several specialty and base metals including lead, making it an interesting leaching agent for metals. Methanesulfonic acid is also a primary ingredient in rust and scale removers.
General Properties and Specifications of Methanesulfonic Acid or MSA or Methanesulphonic acid or Mesylate:
CAS Number: 75-75-2
Appearance: Clear liquid.
Assay: 99% minimum. Also available as 70% minimum.
Color(APHA): 30max for pure grade
Cl: 10max
SO42: 30 ppm max
Fe: 3 ppm maximum.
Heavy Metal: 5 ppm maximum.
Relative density: around 1.48
Melting point: 20C.
Boiling point: 167C @ 10mm Hg.
Flash point: 189C.
Autoignition Temperature: >500C.
Solubility: Miscible with water. Miscible with methanol, diethyl ether. Immiscible with hexane.