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[Chemical Knowledge]：Properties and Uses of DMC

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The properties and uses
of DMC in the field of chemical production raw materials
DMC, all known as dimethyl carbonate, is a kind of chemical raw materials with many important properties. 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. The nature and uses of DMC are extensive, and this article will discuss it in detail.

1. DMC Properties

1. Physical Properties
DMC is a colorless, transparent, pungent liquid with 1.073 relative density, melting point 2~4 ℃, boiling point 90.2 ℃, refractive index 1. 3697, flash point (open cup) 21.7 ℃, viscosity 0.664mPa · s. DMC is insoluble in water, but is miscible with organic solvents such as alcohols, ethers, ketones, etc.

2. chemical properties
DMC has active chemical reactivity, which can react with alcohols, phenols, amines, esters and other compounds to generate a variety of important derivatives. In addition, DMC also has good oxidation resistance and thermal stability.

2. DMC use

1. solvent
DMC is an excellent solvent, can be used in paint, paint, ink and other industries as a solvent or cosolvent, improve product gloss and drying speed. In addition, DMC can also be used to clean electronic equipment, precision instruments, etc.

2. Chemical raw material
DMC can be used as chemical raw materials for the production of a variety of important chemical products, such as methyl methacrylate, ethylene glycol, diphenyl carbonate and so on. In addition, DMC can also be used to synthesize diesel additives, lubricating oil additives, etc.

3. Fuel additive
DMC can be used as a fuel additive to improve fuel combustion efficiency and cleanliness and reduce harmful emissions.

4. Surfactant
DMC can be used as a surfactant for the production of detergents, emulsifiers, etc.

3. DMC production methods

DMC production methods mainly include phosgene method, ester exchange method and methanol oxidative carbonylation method. Among them, the ester exchange method is the most commonly used production method at home and abroad, the method uses dimethyl carbonate and methanol as raw materials, under the action of the catalyst for ester exchange reaction, the generation of DMC and methanol, methanol recycling.

4. DMC market prospects

With the continuous development of the chemical industry, the use of DMC is becoming more and more extensive, and the market demand is also increasing. In the future, with the continuous improvement of environmental awareness and the continuous emergence of new technologies, the production process and application fields of DMC will continue to expand, and the market prospect is broad.

In short, DMC, as an important chemical raw material, has a wide range of properties and uses, and will continue to play an important role in the future chemical industry.

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