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108618

Sigma-Aldrich

Dimethyl sulfite

99%

Synonym(s):

Methyl sulfite

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About This Item

Linear Formula:
(CH3O)2SO
CAS Number:
616-42-2
Molecular Weight:
110.13
Beilstein:
1700256
EC Number:
210-481-0
MDL number:
MFCD00008415
UNSPSC Code:
12352100
PubChem Substance ID:
24846815
NACRES:
NA.22

Assay

99%

refractive index

n20/D 1.410 (lit.)

bp

126-127 °C (lit.)

density

1.294 g/mL at 25 °C (lit.)

SMILES string

COS(=O)OC

InChI

1S/C2H6O3S/c1-4-6(3)5-2/h1-2H3

InChI key

BDUPRNVPXOHWIL-UHFFFAOYSA-N

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General description

Dimethyl sulfite is an insect repellent and also experimentally identified as a mutagenic agent.

Application

The 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.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

100.4 °F - closed cup

Flash Point(C)

38 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Lin Feng et al.
Huan jing ke xue= Huanjing kexue, 31(2), 345-351 (2010-04-16)
A pilot-scale subsurface constructed wetland wastewater treatment system was sampled for one year to study the effects of bed aspect ratio, substrate medium size, water depth, HLR (hydraulic loading rate) and temperature (season) on removal of volatile alkylsulfides such as
Ana Borba et al.
The journal of physical chemistry. A, 109(16), 3578-3586 (2006-07-15)
The preferred conformations of dimethyl sulfite and their vibrational spectra were studied by matrix-isolation Fourier transform infrared spectroscopy and theoretical methods (density functional theory (DFT) and Moller-Plesset (MP2), with basis sets of different sizes, including the quadruple-zeta, aug-cc-pVQZ basis). Five
K Nagarajan et al.
Chemical communications (Cambridge, England), (18)(18), 1786-1787 (2002-09-25)
pH dependent reactivity differences of dimethylsulfite towards the title complex 1 demonstrate the crucial need of oxo-anionic coordination of sulfite to the molybdenum centre of 1 in the model reductive half reaction of sulfite oxidase.
Conformational cooling and conformation selective aggregation in dimethyl sulfite isolated in solid rare gases.
Borba A, et al.
Journal of Molecular Structure, 794(1), 196-203 (2006)
M S Brody et al.
Biochimica et biophysica acta, 1253(2), 133-135 (1995-12-06)
We have undertaken a steady-state and rapid kinetic study of the reaction of enzyme with sulfite and dimethylsulfite. Methylation of sulfite results in a significant increase in Km and Kd for the substrate in the course of steady-state and rapid

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