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Dimethyl Carbonate

Synonyms

DMC; Carbonic acid, dimethyl ester; Methyl carbonate; DIMETHYL CARBONATE

Description

Dimethyl carbonate (DMC) is a colorless, transparent, slightly fragrant flammable liquid at room temperature. It is an environmentally friendly green chemical raw material. Its molecule contains methyl groups (-CH₃) and carbonyl groups (-CO-), exhibiting both methylation and carbonylation reactivity. It is low-toxic, biodegradable, and can replace traditional highly toxic reagents such as dimethyl sulfate and methyl chloride.

Physical&Chemical Properties

Molecular Formula:C3H6O3
Density:1.07g/cm³
Boiling Point:90℃
Solubility:
Slightly soluble in water, miscible with most organic solvents such as alcohols, ketones, esters and ethers.

Molecular Weight:90.1g/mol
Flash Point:18℃
Melting Point:3℃

Uses

1. Organic synthesis: Raw material for methylation/carbonylation in the production of polycarbonate (PC), isocyanates, and pharmaceutical/pesticide intermediates.
2. Solvent: Coatings, cleaning agents, lithium-ion battery electrolytes, specialty solvents.
3. Fuel additive: Improves octane number and oxygen content of gasoline, and reduces exhaust emissions.
4. Chemical intermediate: Synthesis of diphenyl carbonate, allyl diglycol carbonate, etc.

Safety,Security&Risk

Physical Hazards
Vapour is heavier than air, may spread along the ground and cause ignition at a distance. The vapour, when thoroughly mixed with air, readily forms flammable explosive mixtures.
Chemical Hazards
Reacts violently with oxidizing agents and potassium tert-butoxide, posing a fire hazard. Decomposes on combustion, producing irritating fumes.

TagsCompound

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