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Merck
CN

41620

Sigma-Aldrich

Dimethyl sulfate

purum, ≥95.0% (GC)

Synonym(s):

Sulfuric acid dimethyl ester

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About This Item

Linear Formula:
(CH3O)2SO2
CAS Number:
77-78-1
Molecular Weight:
126.13
Beilstein:
635994
EC Number:
201-058-1
MDL number:
MFCD00008416
UNSPSC Code:
12352100
PubChem Substance ID:
329756125

Key Documents

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vapor density

4.3 (vs air)

vapor pressure

0.7 mmHg ( 25 °C)

grade

purum

Assay

≥95.0% (GC)

autoignition temp.

923 °F

refractive index

n20/D 1.386 (lit.)
n20/D 1.387

bp

188 °C (lit.)

mp

−32 °C (lit.)

density

1.333 g/mL at 25 °C (lit.)

SMILES string

COS(=O)(=O)OC

InChI

1S/C2H6O4S/c1-5-7(3,4)6-2/h1-2H3

InChI key

VAYGXNSJCAHWJZ-UHFFFAOYSA-N

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Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Carc. 1B - Eye Dam. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

181.4 °F - closed cup

Flash Point(C)

83 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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J D McGhee et al.
Proceedings of the National Academy of Sciences of the United States of America, 76(5), 2133-2137 (1979-05-01)
We have measured the effect of the histones in the nucleosome core particle on methylation of purines in nucleosome DNA by dimethyl sulfate. By using 32P terminally labeled nucleosome cores, we have examined the pattern of strand cleavage at methylated
M L Lee et al.
Science (New York, N.Y.), 207(4427), 186-188 (1980-01-11)
Dimethyl sulfate and its hydrolysis product monomethyl sulfate have been found at concentrations as high as 830 parts per million in fly ash and in airborne particulate matter from coal combustion processes. This discovery poses a new environmental problem because
Kwang Sun Ryu et al.
The journal of physical chemistry. B, 111(4), 731-739 (2007-01-26)
The physical properties of polyaniline (PAn) powder, doped by nucleophilic doping of dimethyl sulfate (DMS), were characterized, as well as its electrochemical behaviors, to investigate the possibility of a power source device adopting the PAn-DMS electrodes. It is shown that
Jie Zheng et al.
Journal of pharmaceutical and biomedical analysis, 50(5), 1054-1059 (2009-07-07)
Dimethyl sulfate (DMS) is an alkylating reagent commonly used in organic syntheses and pharmaceutical manufacturing processes. Due to its potential carcinogenicity, the level of DMS in the API process needs to be carefully monitored. However, in-process testing for DMS is
Cecilia E Ström et al.
Nucleic acids research, 39(8), 3166-3175 (2010-12-25)
Base excision repair (BER) represents the most important repair pathway of endogenous DNA lesions. Initially, a base damage is recognized, excised and a DNA single-strand break (SSB) intermediate forms. The SSB is then ligated, a process that employs proteins also
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