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[Chemical Knowledge]：Properties and Uses of Dimethyl Carbonate (Technical Grade)

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Dimethyl carbonate (Dimethyl Carbonate, DMC) is an important organic chemical raw material, which has a wide range of applications in industrial production. This article will detail the properties, uses and production information of dimethyl carbonate.

1. the nature of dimethyl carbonate

dimethyl carbonate is a colorless transparent, pungent odor liquid. Its molecular formula is C3H6O3, and its structure contains functional groups such as carbonyl, methyl and methoxy, so it has a variety of reaction properties. Dimethyl carbonate has a boiling point of 90.2 ℃, a melting point of 2-4 ℃, and a density of 1.073g/cm³. It is insoluble in water, but it is miscible with organic solvents such as alcohols, ethers, and ketones.

In addition, dimethyl carbonate has low flash point, flammable and explosive characteristics, so special attention should be paid to safety during storage and use.

2. the use of dimethyl carbonate

dimethyl carbonate as an important chemical raw material, widely used in the following fields:

1. Solvent: dimethyl carbonate is an excellent solvent, which can be used in the production of paints, coatings, adhesives and other fields.
2. Fuel: Dimethyl carbonate can be used as a fuel additive to improve fuel combustion efficiency and reduce harmful emissions.
3. Chemical raw materials: Dimethyl carbonate can be used to synthesize various chemical products, such as methanol, ethylene glycol, propylene glycol, etc.
4. Surfactant: Dimethyl carbonate can be used as a surfactant raw material for the production of detergents, emulsifiers, etc.

3. Production
of Dimethyl Carbonate There are various production methods of
dimethyl carbonate, including phosgene method, methanol carbonylation oxidation method, urea method, etc. Among them, methanol carbonylation oxidation is a commonly used method in industrial production at present, which uses methanol, carbon monoxide and oxygen as raw materials, and finally produces dimethyl carbonate through carbonylation, oxidation and other reaction steps.

4. precautions

In the process of producing and using dimethyl carbonate, the following matters need to be paid attention to:

1. Storage: Dimethyl carbonate should be stored in a cool, ventilated and dry warehouse, away from fire and heat sources.
2. operation: operators should be professionally trained, strictly abide by the operating procedures, wearing protective equipment.
3. Transportation: Dimethyl carbonate should be lightly loaded and unloaded during transportation to prevent package damage and avoid sun exposure and high temperature environment.

In conclusion, dimethyl carbonate, as an important chemical raw material, has a wide range of applications in industrial production. Understanding and mastering its nature, use and production information will help improve production efficiency, ensure production safety, and promote the sustainable development of the chemical industry.

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