Methanesulfonic acid CAS#75-75-2

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

Methanesulfonic acid (CH3SO3H, 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.The aqueous MSA solution has been considered a model electrolyte for electrochemical processes.
Methanesulfonic acid is an alkanesulfonic acid in which the alkyl group directly linked to the sulfo functionality is methyl. It has a role as an Escherichia coli metabolite. It is an alkanesulfonic acid and a one-carbon compound. It is a conjugate acid of a methanesulfonate.

Parameters

Melting point	17-19 °C (lit.)
Boiling point	167 °C/10 mmHg (lit.)
density	1.475-1.485 g/mL at 20 °C 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
solubility	water: soluble1,000 g/L at 20°C
form	Solution
pka	-2.6(at 25℃)
Specific Gravity	1.48 (18/4℃)
color	brown
biological source	synthetic
Water Solubility	Miscible with water. Slightly miscible with benzene and toluene. Immiscible with paraffins.
λmax	λ: 240-320 nm Amax: <0.4
Sensitive	Light Sensitive & Hygroscopic
Merck	14,5954
BRN	1446024
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).
InChIKey	AFVFQIVMOAPDHO-UHFFFAOYSA-N
CAS DataBase  Reference	75-75-2(CAS DataBase Reference)
NIST Chemistry  Reference	CH3SO3H(75-75-2)
EPA Substance  Registry System	Methanesulfonic acid (75-75-2)

Safety Information

Hazard Codes	C
Risk Statements	34-22-21/22-35
Safety  Statements	26-36-45-1/2-36/37/39
RIDADR	UN 3265 8/PG 2
WGK Germany	1
RTECS	PB1140000
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29041000
Hazardous  Substances Data	75-75-2(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 649 mg/kg LD50 dermal Rabbit 200 - 2000 mg/kg

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

Methanesulfonic acid is used as a catalyst in organic reactions namely esterification, alkylation and condensation reactions due to its non- volatile nature and solubility in organic solvents. It is also involved in the production of starch esters, wax oxidate esters, benzoic acid esters, phenolic esters, or alkyl esters. It reacts with sodium borohydride in presence of polar solvent tetrahydrofuran to prepare borane-tetrahydrofuran complex. It finds application in batteries, because of its purity and chloride absence. In pharmaceutical industry, it is used for the manufacturing of active pharmaceutical ingredients like telmisartan and eprosartan. It is useful in ion chromatography and is a source of carbon and energy for some gram-negative methylotropic bacteria.It is involved in the deprotection of peptides.

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