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41610

Sigma-Aldrich

Dimethyl sulfate

puriss. p.a., ≥99.0% (GC)

Sinonimo/i:

Sulfuric acid dimethyl ester

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About This Item

Formula condensata:
(CH3O)2SO2
Numero CAS:
Peso molecolare:
126.13
Beilstein:
635994
Numero CE:
Numero MDL:
Codice UNSPSC:
12352100
ID PubChem:
NACRES:
NA.21

Densità del vapore

4.3 (vs air)

Livello qualitativo

Tensione di vapore

0.7 mmHg ( 25 °C)

Grado

puriss. p.a.

Saggio

≥99.0% (GC)

Stato

liquid

Temp. autoaccensione

923 °F

Impurezze

≤0.4% free acid (as H2SO4)

Residuo alla calcinazione

≤0.02%

Indice di rifrazione

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

P. ebollizione

188 °C (lit.)

Punto di fusione

−32 °C (lit.)

Solubilità

ethanol: 0.26 g/mL, clear, colorless
diethyl ether: 1.3 g/5mL, clear, colorless

Densità

1.333 g/mL at 25 °C (lit.)

Cationi in tracce

Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤1 mg/kg

Stringa SMILE

COS(=O)(=O)OC

InChI

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

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Descrizione generale

Dimethyl sulfate is the dimethyl ester of sulfuric acid. It undergoes hydrolysis to afford monomethyl sulfate. It is found as contaminant in fly ash and in airborne particulate matter generated during the coal combustion processes.

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

181.4 °F - closed cup

Punto d’infiammabilità (°C)

83 °C - closed cup

Dispositivi di protezione individuale

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Proceedings of the National Academy of Sciences of the United States of America, 76(5), 2133-2137 (1979-05-01)
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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
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