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LC3816 Methyl methanesulfonate

for synthesis


Order number Packaging Quantity Price €
AC30816 Glass bottle 5 ml  Inquire
AC30816 Glass bottle 25 ml Inquire


Product information
Synonyms Methanesulfonic acid methyl ester, MMS
Hill Formula C2H6O3S
HS Code 2905 19 00
EC number 200-625-0
Molar mass 110.13 g/mol
CAS number 66-27-3


Chemical and physical data
Solubility 200 g/l (20 °C)
Melting point 20 °C
Molar mass 110.13 g/mol
Density 1.30 g/cm3 (20 °C)
Boiling point 203 °C (1013 hPa)
Vapor pressure 0.8 hPa (59 °C)
Flash point 104 °C
Refractive index 1.414 (20 °C, 589 nm)


Safety information
R Phrase R 45-46-22-62
May cause cancer.May cause heritable genetic damage.Also harmful if swallowed.Possible risk of impaired fertility.
S Phrase S 53-36/37-45
Avoid exposure – obtain special instructions before use.Wear suitable protective clothing and gloves.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger carcinogenic, mutagenic, harmful, toxic for reproduction
Hazard Symbol


RTECS PB2625000
Storage class Combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).


Transport information
Declaration (transport by sea) IMDG-Code UN 2810 TOXIC LIQUID, ORGANIC, N.O.S.(METHYL METHANESULFONATE), 6.1, III
Declaration (transport by air) IATA-DGR UN 2810 TOXIC LIQUID, ORGANIC, N.O.S.(METHYL METHANESULFONATE), 6.1, III


Toxicological data
LD 50 oral LD50 rat 225 mg/kg


Assay (GC, area%) ≥ 99 %
Density (d 20 °C/ 4 °C) 1.298 – 1.299
Identity (IR) passes test