Dimethyl carbonate

Dimethyl carbonate Introduction:

Dimethyl carbonate is an organic compound, whose chemical formula is C3H6O3. It is a chemical raw material with low toxicity, excellent environmental protection performance and wide use. It is an important intermediate of organic synthesis.

Dimethyl carbonate Usage:

Instead of phosgene as carbonylation agent

Phosgene is highly reactive, but its toxic and corrosive byproducts make it face great environmental pressure, so it will be gradually eliminated. DMC has a similar nucleophilic reaction center. When the carbonyl group of DMC is attacked by nucleophilic attack, the acyl-oxygen bond is broken to form carbonyl compounds, and the byproduct is methanol. Therefore, DMC can replace phosgene as a safe reagent to synthesize carbonic acid derivatives, such as carbamate pesticides, polycarbonate, isocyanate, etc. Polycarbonate will be the biggest demand area for DMCS. It is predicted that more than 80% of DMCS will be used to produce polycarbonate in 2005.

Instead of dimethyl sulfate as methylating agent

Due to similar reasons as phosgene, dimethyl sulfate also faces elimination pressure, and when the methyl carbon of DMC is attacked by nucleophile, its alkyl-oxygen bond is broken and methylated products are also generated. Moreover, the reaction yield and process with DMC is higher and simpler than that with dimethyl sulfate. The main applications include synthetic organic intermediates, pesticide products and so on.

Low toxic solvent

DMC has excellent solubility, its melting and boiling point range is narrow, the surface tension is large, the viscosity is low, the dielectric constant is small, at the same time has a high evaporation temperature and fast evaporation rate, so it can be used as a low toxic solvent for coating industry. It can be seen that DMC not only has low toxicity, but also has the characteristics of high flash point, low steam pressure and high lower explosive limit in the air, so it is a green solvent integrating cleanliness and safety.