CAS Number: 75-75-2
Formula: CH4O3S
Formula Weight: 96.11
Linear Formula: CH3SO3H
MDL No.: MFCD00007518
Density: 1.319 g/mL at 25 C
Refractive Index: n20/D 1.416
Beilstein Registry Number: 1446024
UNSPSC Code: 12352100
General description: The product is a 70% aqueous solution of methanesulfonic acid (MSA). MSA is a strong organic acid. The chemical oxidation of dimetyl sulfide in the atmosphere leads to the formation of MSA in large quantities. MSA undergoes biodegradation by forming CO2 and sulphate. It is considered a green acid as it is less toxic and corrosive in comparison to mineral acids.1 The aqueous MSA solution has been considered a model electrolyte for electrochemical processes.
Application: Methanesulfonic acid solution may be used to study the corrosion behavior of stainless steel.
RIDADR: UN 3265 8 / PGII
WGK Germany: 3
R Codes: 21/22-34
S Codes: 26-36/37/39-45
IOD Codes: C
Symbol: GHS05, GHS07
Signal Word: Danger
Hazard Statements: H290-H302 + H312-H314-H335
Precautionary statements: P260-P280-P301 + P312 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338