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Dimethyl sulfite

Dimethyl sulfite Basic information
Product Name:Dimethyl sulfite
Synonyms:SULFUROUS ACID DIMETHYL ESTER;DIMETHYL SULFITE;METHYL SULFITE;(CH3O)2SO;Dimethoxy sulfoxide;dimethoxysulfoxide;Dimethyl ester of sulfurous acid;Dimethyl sulphite
CAS:616-42-2
MF:C2H6O3S
MW:110.13
EINECS:210-481-0
Product Categories:pharmaceutical;Organics
Mol File:616-42-2.mol
Dimethyl sulfite Structure
Dimethyl sulfite Chemical Properties
Melting point 0°C
Boiling point 126-127 °C (lit.)
density 1.294 g/mL at 25 °C (lit.)
refractive index n20/D 1.410(lit.)
Fp 106 °F
storage temp. Flammables area
form Liquid
color Clear colorless to pale yellow
Water Solubility soluble
BRN 1700256
CAS DataBase Reference616-42-2(CAS DataBase Reference)
NIST Chemistry ReferenceSulfurous acid, dimethyl ester(616-42-2)
EPA Substance Registry SystemSulfurous acid, dimethyl ester (616-42-2)
Safety Information
Hazard Codes Xi
Risk Statements 10-36/37/38
Safety Statements 26-36-24/25-16
RIDADR UN 1993 3/PG 3
WGK Germany 3
RTECS WT3512000
HazardClass 3.2
PackingGroup III
HS Code 29209085
MSDS Information
ProviderLanguage
Dimethyl sulfite English
SigmaAldrich English
ACROS English
Dimethyl sulfite Usage And Synthesis
Chemical PropertiesCLEAR COLORLESS TO PALE YELLOW LIQUID
UsesThe conformations and vibrational spectra of dimethyl sulfite was studied by matrix-isolation fourier transform infrared spectroscopy and to study its conformational selective aggregation. It may be used in organic synthesis.
DefinitionChEBI: Dimethyl sulfite is a sulfite ester.
PreparationDimethyl sulfite is prepared from a 1:2 ratio of thionyl chloride and methanol. The reaction can be catalyzed by tertiary amine bases and likely proceeds via the chlorosulfinate (MeOS(O)Cl), this intermediate will exist only fleetingly in the presence of methanol and as such its decomposition to methyl chloride and sulfur dioxide (via the slower SNi mechanism) is not observed to any great extent.
SOCl2 + 2 CH3OH → (CH3O)2SO + 2 HCl
ApplicationThe conformations and vibrational spectra of dimethyl sulfite was studied by matrix-isolation fourier transform infrared spectroscopy and to study its conformational selective aggregation.
Dimethyl sulfite may be used in organic synthesis. It is used as an additive in some polymers to prevent oxidation. It is also a potentially useful high energy battery electrolyte solvent.
General DescriptionDimethyl sulfite is an insect repellent and also experimentally identified as a mutagenic agent.
Dimethyl sulfite Preparation Products And Raw materials
Preparation ProductsMethanesulfonic acid, 1-(dimethylamino)--->P-ANISALDEHYDE DIMETHYL ACETAL-->Methyl chlorosulfonate-->METHYL FLUOROSULFONATE-->4-BROMO-2-METHYLTHIAZOLE-->4-Bromophenyl methyl sulfone-->Chloromethane-->TETRABUTYLAMMONIUM METHANESULFONATE-->1-ETHYL-3-METHYLIMIDAZOLIUM METHANESULFONATE
GLYOXAL SODIUM BISULFITE SODIUM PHOSPHITE-5-HYDRATE Monopotassium phosphite LINOLENIC ACID ETHYL ESTER Diethyl sulfite PHOSPHOROUS ACID TRI-O-CRESYL ESTER Phosphorous acid, bis(1-methylethyl) ester Menadione sodium bisulfite diisooctyl phenyl phosphite Methyl Propane sodium sulfite 1,3,2LAMBDA6-BENZODIOXATHIOLE-2,2-DIONE Kresoxim-methyl Dimethyl sulfite Thiophanate-methyl Dimethyl sebacate METHYL THIOPHENE-2-CARBOXYLATE
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