Dimethyl carbonate is a recently developed friendly green organic chemicals, widely used alternative phosgene the dimethyl sulfate Halothanes larger environmental hazards of chemicals used as carbonation and modulating agent, to meet the current requirements of the cleaning process. This article reviews dimethyl carbonate in pesticide and medicine and intermediates (such as furazolidone intermediate 3 - amino-2 - oral oxazolidinone, sulfonylurea herbicides, carbendazim, carbaryl ring ciprofloxacin intermediate 2,4 - dichloro-5 - fluorobenzoyl acetate, isocyanine) synthesis process green transformation.
Dimethyl carbonate is abbreviated as DMC. At room temperature, it is a colorless, transparent, pungent odorous liquid. The relative density (d204) is 1.0694, the melting point is 4C, the boiling point is 90.3C, the flash point is 21.7C (opening), 16.7C (closed) ), refractive index (nd20Chemicalbook) 1.3687, flammable, non-toxic. It can be mixed with almost all organic solvents such as alcohol, and ester in any ratio, and is slightly soluble in water. Can be used as a methylating agent. Compared with other methylation reagents, such as methyl iodide and dimethyl sulfate, dimethyl carbonate is less toxic and biodegradable.
The physical and chemical properties:
Model NO. 99%
Molecular weight� 60.1g/mol
Hydroxyl No. Monohydroxy
Appearance Colorless Liquid
Available chlorine content 2-13.4%(V)
Properties Miscible
Storage condition Flammables area
Freezing point -89.5C
Applications:
1. A new type of low-toxicity solvent can replace solvents such as toluene, xylene, ethyl acetate, butyl acetate, acetone or methyl ethyl ketone in the paint and adhesive industries. It is an environmentally friendly green chemical product.
2. Good methylating agent, carbonylating agent, hydroxymethylating agent and methoxylating agent are a kind of chemical raw materials with a wide range of uses.
3. Chemicalbook wants to replace phosgene, dimethyl sulfate, methyl chloroformate and other highly toxic drugs.
4. Synthetic polycarbonate, diphenyl carbonate, isocyanate, etc.
5. In medicine, it is used to synthesize anti-infective drugs, antipyretic and analgesic drugs, vitamin drugs, and central nervous system drugs.
6. Pesticides are mainly used to produce methyl isocyanate, and then to produce certain carbamate drugs and insecticides (anisole).
7. Gasoline additives, lithium battery electrolyte, etc.
Dimethyl Carbonate is a kind of outstanding methylating reagent,and an ideal substitute for phosgene,dimethyl sulfate and methyl chloroformate,and widely used for synthesizing diphenyl carbonate,isocaynate,allyl diethylene glycol carbonate and carbamates pesticide.
Hi-tech spring company makes a great breakthrough in the research of new effective gasoline antiknock ---dimethyl carbonate.
The gasoline which mixed dimethyl carbonate has more obvious advantages:
It is useful for the environment protection. It will improve the exhaust effect of thc and nox and increase the decontamination efficiency of co and thc which can be reached over 90%. It also can increase the octane rating of gasoline, 4.7% dmc mixed, the octane rating of gasoline will increase 3%~6%, and there woní»t be any change if more dmc be mixed in gasoline .
Chemical Name: Dimethyl Carbonate
Molecular Formula: C3H6O3
Molecular Weight: 90.07
CAS No.: 616-38-6
Application:
Polycarbonate, taking place of Phosgene (COCL2)
DMC is non-toxic green solvent, using as substitude of traditional toxic solvent like Toluene, Xylene, Acetone, MEK, Ethyl Acetate, Butyl Acetate, in Paint (Nitro-lacquer, Furniture Varnish and Car Varnish ect ) and Adhesive industry
Pesticide
TMAH as developing liquid
Lithium battery electrolyte
Packing:
Iron drum of 200kg net each, 80 drums / 20s FCL
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