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Dimethyl sulfate Structure

Dimethyl sulfate

Chemical Properties

Melting point -32 °C
Boiling point 188 °C(lit.)
Density  1.333 g/mL at 25 °C(lit.)
vapor density  4.3 (vs air)
vapor pressure  0.7 mm Hg ( 25 °C)
refractive index  n20/D 1.386(lit.)
Flash point 182 °F
storage temp.  2-8°C
solubility  ethanol: 0.26 g/mL, clear, colorless
form  Liquid
color  Clear colorless
Odor Almost odorless
Water Solubility  2.8 g/100 mL (18 ºC)
Merck  13,3282
BRN  635994
Exposure limits TLV/PEL-TWA skin 0.1 ppm (0.52 mg/m3 ) (ACGIH, OSHA, NIOSH) IDLH 10 ppm (NIOSH).
Dielectric constant 55.0(20℃)
Stability Stable; combustible. Incompatible with strong oxidizing agents, strong bases including ammonia. Moisture-sensitive.
CAS DataBase Reference 77-78-1(CAS DataBase Reference)
IARC 2A (Vol. 4, Sup 7, 71) 1999
NIST Chemistry Reference Sulfuric acid, dimethyl ester(77-78-1)
EPA Substance Registry System Dimethyl sulfate (77-78-1)

Safety Information

Hazard Codes  T+
Risk Statements  45-25-26-34-43-68
Safety Statements  53-45-61
RIDADR  UN 1595 6.1/PG 1
WGK Germany  2
RTECS  WS8225000
21
Autoignition Temperature 495 °C
HazardClass  6.1(a)
PackingGroup  I
HS Code  29209090
Hazardous Substances Data 77-78-1(Hazardous Substances Data)
Toxicity LD50 orally in rats: 440 mg/kg (Smyth)
IDLA 7 ppm

MSDS

Usage And Synthesis

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