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LC3949 Methanesulfonyl chloride

for synthesis


Order number Packaging Quantity Price €
AC30949 Glass bottle 250 ml 15.75
AC30949 Glass bottle 1 l 48.60
AC30949 Glass bottle 2.5 l 108.90


Product information
Synonyms Methanesulfonyl chloride, Mesyl chloride
Hill Formula CH3ClO2S
Chemicalformula CH3SO2Cl
HS Code 2904 90 95
EC number 204-706-1
Molar mass 114.55 g/mol
CAS number 124-63-0


Chemical and physical data
Solubility (20 °C) insoluble,(slow decomposition)
Melting point -32 °C
Molar mass 114.55 g/mol
Density 1.478 g/cm3 (20 °C)
Boiling point 161 °C (1013 hPa)
Vapor pressure 2.79 hPa (20 °C)
Flash point >110 °C
Refractive index 1.45 (20 °C)


Safety information according to GHS
Hazard Statement(s) H330: Fatal if inhaled.
H312: Harmful in contact with skin.
H301: Toxic if swallowed.
H314: Causes severe skin burns and eye damage.
H335: May cause respiratory irritation.
Precautionary Statement(s) P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
RTECS PB2790000
Storage class 6.1A Combustible substances, toxic
WGK WGK 2 water endangering


Safety information
R Phrase R 21/22-26-34-37-52/53
Harmful in contact with skin and if swallowed.Very toxic by inhalation.Causes burns.Irritating to respiratory system.Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 26-28-36/37/39-45-61
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.After contact with skin, wash immediately with plenty of water.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categoriesofdanger very toxic, corrosive, dangerous for the environment
Hazard Symbol Very toxic


Transport information
Declaration (transport by sea) IMDG-Code UN 3246 METHANESULPHONYL CHLORIDE, 6.1 (8), I, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 3246 METHANESULPHONYL CHLORIDE, 6.1 (8),


Toxicological data
LD 50 oral LD50 rat 205 – 317 mg/kg
LD 50 dermal LD50 rabbit 200 – 2000 mg/kg


Assay (GC, area%) ≥ 99 %
Density (d 20 °C/ 4 °C) 1.473 – 1.476
Identity (IR) passes test


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