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Description Feedback
Dimethyl sulfate is a chemical compound with formula (CH3O)2SO2. As the diester of methanol and sulfuric acid, its formula is often written as (CH3)2SO4 or even Me2SO4, where CH3 or Me is methyl. Me2SO4 is mainly used as a methylating agent in organic synthesis.
Under standard conditions, Me2SO4 is a colourless oily liquid with a slight onion-like odour (although smelling it would represent significant exposure). Like all strong alkylating agents, Me2SO4 is extremely toxic. Its use as a laboratory reagent has been superseded to some extent by methyl triflate, CF3SO3CH3, the methyl ester of trifluoromethanesulfonic acid.

Properties Feedback
Appearance & Physical State:Clear oily liquid
Density:1.333
Melting Point:-32ºC
Boiling Point:188ºC
Flash Point:83ºC
Refractive Index:1.386-1.388
Stability:Stable; combustible. Incompatible with strong oxidizing agents, strong bases including ammonia. Moisture-sensitive.
Storage Condition:2-8ºC

Safety Info Feedback
Symbol:
GHS05

GHS06

GHS08
Sign:Danger
hazard declaration:H301; H314; H317; H330; H341; H350
hazard declaration add:
waring notice:P201; P260; P280; P301 + P310 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338; P308 + P313; P403 + P233
Hazard Class:6.1(a)
Safety Statements:S45-S53
HS Code:2920909090
RIDADR:UN 1595
Risk Statements:R25; R26; R34; R43; R45; R68
Hazard Codes:T+

MSDS


Synthesis Route Total: 35 Synthesis Route
 
121-45-9
~95%
512-56-1
77-78-1
View Detail
 
121-45-9
~54%
512-56-1
View Detail

Precursor and Product