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41610 Sigma-Aldrich

Dimethyl sulfate

puriss. p.a., ≥99.0% (GC)

Synonym: Sulfuric acid dimethyl ester

  • CAS Number 77-78-1

  • Linear Formula (CH3O)2SO2

  • Molecular Weight 126.13

  •  Beilstein Registry Number 635994

  •  EC Number 201-058-1

  •  MDL number MFCD00008416

  •  PubChem Substance ID 24866059

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Properties

Related Categories Alkyl Transfer, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, C-D, Puriss p.a.,
Quality Level   PREMIUM
vapor density   4.3 (vs air)
vapor pressure   0.7 mmHg ( 25 °C)
InChI Key   VAYGXNSJCAHWJZ-UHFFFAOYSA-N
grade   puriss. p.a.
assay   ≥99.0% (GC)
autoignition temp.   923 °F
impurities   ≤0.4% free acid (as H2SO4)
ign. residue   ≤0.02%
refractive index   n20/D 1.386(lit.)
  n20/D 1.387
bp   188 °C(lit.)
mp   −32 °C(lit.)
solubility   ethanol: soluble0.26 g/mL, clear, colorless
  diethyl ether: soluble1.3 g/5mL, clear, colorless
density   1.333 g/mL at 25 °C(lit.)
cation traces   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

Description

General description

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.

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN1595 - class 6.1 - PG 1 - Dimethyl sulphate
WGK Germany 
3
RTECS 
WS8225000
Flash Point(F) 
181.4 °F
Flash Point(C) 
83 °C
Protocols & Articles
Peer-Reviewed Papers
15

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