Methanesulfonic acid

Modify Date: 2025-08-20 17:38:53

Methanesulfonic acid structure	Common Name	Methanesulfonic acid
	CAS Number	75-75-2	Molecular Weight	96.106
	Density	1.5±0.1 g/cm3	Boiling Point	167 °C10 mm Hg(lit.)
	Molecular Formula	CH₄O₃S	Melting Point	19 °C
	MSDS	Chinese USA	Flash Point	>230 °F
	Symbol	GHS05, GHS07	Signal Word	Danger

Name	methanesulfonic acid
Synonym	More Synonyms

Density	1.5±0.1 g/cm3
Boiling Point	167 °C10 mm Hg(lit.)
Melting Point	19 °C
Molecular Formula	CH₄O₃S
Molecular Weight	96.106
Flash Point	>230 °F
Exact Mass	95.988113
PSA	62.75000
LogP	-1.89
Vapour density	3.3 (vs air)
Vapour Pressure	1 mm Hg ( 20 °C)
Index of Refraction	1.448
InChIKey	AFVFQIVMOAPDHO-UHFFFAOYSA-N
SMILES	CS(=O)(=O)O
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).

Methanesulfonic acid MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: PB1140000

CHEMICAL NAME :: Methanesulfonic acid

CAS REGISTRY NUMBER :: 75-75-2

BEILSTEIN REFERENCE NO. :: 1446024

LAST UPDATED :: 199710

DATA ITEMS CITED :: 11

MOLECULAR FORMULA :: C-H4-O3-S

MOLECULAR WEIGHT :: 96.11

WISWESSER LINE NOTATION :: WSQ1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >330 ppm/6H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KODAK* Kodak Company Reports. (343 State St., Rochester, NY 14650) Volume(issue)/page/year: 21MAY1971

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - quail

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 48,371,1976 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 83577 No. of Facilities: 82 (estimated) No. of Industries: 3 No. of Occupations: 9 No. of Employees: 1209 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 83577 No. of Facilities: 325 (estimated) No. of Industries: 7 No. of Occupations: 13 No. of Employees: 8084 (estimated) No. of Female Employees: 1393 (estimated)

Symbol	GHS05, GHS07
Signal Word	Danger
Hazard Statements	H290-H302 + H312-H314-H335
Precautionary Statements	P301 + P312 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338
Personal Protective Equipment	Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	C:Corrosive
Risk Phrases	R34
Safety Phrases	S26-S36-S45-S1/2-S36/37/39
RIDADR	UN 3265 8/PG 2
WGK Germany	1
RTECS	PB1140000
Packaging Group	III
Hazard Class	8
HS Code	2904100000

Precursor 9
CAS#:74-93-1 Methyl mercaptan CAS#:34557-54-5 methane CAS#:73153-55-6 2-Benzamidophen... CAS#:74-88-4 methyl iodide
CAS#:624-92-0 Dimethyl disulfide CAS#:77-78-1 Dimethyl sulfate CAS#:2949-92-0 Methyl Methanet... CAS#:66-27-3 Methyl methanes...
CAS#:556-64-9 methyl thiocyanate
DownStream 9
CAS#:1048007-93-7 Masitinib (mesylate) CAS#:1077-02-7 (3-methylphenyl... CAS#:1095565-87-9 (5S)-2-[(1S,2S,... CAS#:3570-58-9 Ethanol, 2-chlo...
CAS#:80520-50-9 1-chlorododecan... CAS#:1373360-84-9 2-oxododecyl me... CAS#:1352167-40-8 1-chloro-5-(dib... CAS#:58131-47-8 Calcium dimetha...
CAS#:3517-90-6 p-Anisyl methyl...

HS Code	2904100000
Summary	2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

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EINECS 200-898-6

Mesic acid

MFCD00007518

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CH3SO3H

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Methane sulfonicacid

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Methanesulfonic acid
Price: Check
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Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Methanesulfonic acid
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Purity: 99.0%
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DC Chemicals Limited
China
Product Name: Methanesulfonic acid
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/500mg
Purity: 98.0%
Delivery: 3 Day
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Methanesulfonic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Methanesulfonic acid
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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Methanesulfonic acid

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