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  • Methanesulfonic acid CAS#75-75-2
  • Methanesulfonic acid CAS#75-75-2
  • Methanesulfonic acid CAS#75-75-2
  • Methanesulfonic acid CAS#75-75-2
  • Methanesulfonic acid CAS#75-75-2

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Methanesulfonic acid CAS#75-75-2

Methanesulfonic acid CAS#75-75-2

Basic Information

Environmentally Friendly Profile‌ : Classified as a "green acid" due to lower toxicity and reduced corrosiveness compared to traditional mineral acids, minimizing environmental impact.


‌Biodegradability‌ : Undergoes natural degradation into CO₂ and sulfate, ensuring sustainability and compliance with ecological standards.


‌Versatile Electrolyte Applications‌ : Serves as a model aqueous electrolyte for electrochemical processes, enabling efficient and stable performance in energy storage and conversion systems.


‌Unique Chemical Structure & Functionality‌ : Acts as an alkanesulfonic acid with a methyl group linked to the sulfo functionality, and serves as an Escherichia coli metabolite, broadening its utility in biological and chemical contexts.

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product description

Product Description of Methanesulfonic acid CAS#75-75-2

Methanesulfonic acid (CH₃SO₃H, MSA) is a strong organic acid. It is abundantly generated in the atmosphere by the chemical oxidation of dimethyl sulfide and biodegradable into carbon dioxide and sulfate. With lower toxicity and corrosiveness than conventional mineral acids, MSA is considered a green acid. Its aqueous solution is commonly used as a model electrolyte in electrochemical processes.


Product Application of Methanesulfonic acid CAS#75-75-2

Methanesulfonic acid is non-volatile and well soluble in organic solvents, widely used as a catalyst for esterification, alkylation and condensation reactions. It applies to the synthesis of starch esters, oxidized wax esters, benzoate esters, phenolic esters and various alkyl esters. In polar tetrahydrofuran solvent, it reacts with sodium borohydride to form borane-tetrahydrofuran complex.



Product Information

Parameters


Melting point17-19 °C (lit.)
Boiling point167 °C/10 mmHg (lit.)
density1.475-1.485 g/mL at 20 °C 1.481 g/mL at 25 °C (lit.)
vapor density3.3 (vs air)
vapor pressure1 mm Hg ( 20 °C)
refractive indexn20/D 1.429(lit.)
Fp>230 °F
storage temp.2-8°C
solubilitywater: soluble1,000 g/L at 20°C
formSolution
pka-2.6(at 25℃)
Specific Gravity1.48 (18/4℃)
colorbrown
biological sourcesynthetic
Water SolubilityMiscible with water. Slightly miscible with benzene and toluene. Immiscible with paraffins.
λmaxλ: 240-320 nm Amax: <0.4
SensitiveLight Sensitive & Hygroscopic
Merck145,954
BRN1446024
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).
InChIKeyAFVFQIVMOAPDHO-UHFFFAOYSA-N
CAS DataBase75-75-2(CAS DataBase Reference)
Reference
NIST ChemistryCH3SO3H(75-75-2)
Reference
EPA SubstanceMethanesulfonic acid (75-75-2)
Registry System
Hazard CodesC
Risk Statements34-22-21/22-35
Safety26-36-45-1/2-36/37/39
Statements
RIDADRUN 3265 8/PG 2
WGK Germany1
RTECSPB1140000
TSCAYes
HazardClass8
PackingGroupIII
HS Code29041000
Hazardous75-75-2(Hazardous Substances Data)
Substances Data
ToxicityLD50 orally in Rabbit: 649 mg/kg LD50 dermal Rabbit 200 - 2000 mg/kg


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