Dichloromethane

DCM, Methylene chloride; Methane dichloride; Methylene dichloride; narkotil; Plastisolve; R 30; Refrigerant 30; solaesthin; solmethine

Dichloromethane is a member of the methyl chloride category, and it is methane in which two hydrogens have been replaced by chlorine. It is a dense at room temperature (bp 40°C, d = 1.33), non-flammable colorless liquid with a sweet taste, permeability, and smell similar to ether.   andsoluble in ethanol and ether. As a non-flammable low-boiling solvent. It is often used to replace flammable petroleum ether and ether. It is not flammable when exposed to high temperatures, but may release toxic chloride fumes. Its vapor is a highly concentrated narcotic.  
Dichloromethane has the advantages of strong solubility and low toxicity. It is widely used in the manufacture of safety film and polycarbonate, and the rest is used as coating solvent, metal degreasing agent, aerosol spraying agent, polyurethane foaming agent, mold release agent, and release agent. Lacquer.
Dichloromethane has the advantages of strong solubility and low toxicity. It is widely used in the manufacture of safety film and polycarbonate, coating solvent, metal degreasing agent, aerosol spraying agent, polyurethane foaming agent, release agent, andPaint remover.

1. Used as a reaction medium in the pharmaceutical industry to prepare ampicillin, ampicillin, cephalosporin, etc.; 
2.  used as a solvent in film production, petroleum dewaxing solvent, aerosol propellant, organic synthesis extractant, polyurethane foam, etc. 
3. Used as blowing agent and metal cleaning agent for plastic production.
4. Used as a refrigerant in industrial refrigeration systems, but it is very harmful and can produce highly toxic phosgene when it comes in contact with open flames or hot objects. It can be hydrolyzed to generate a small amount of hydrogen chloride in humid air, and light can also promote hydrolysis and increase the corrosiveness of metals.
5. Used for grain fumigation and refrigeration of low-pressure refrigerators and air-conditioning devices. Used as an auxiliary blowing agent in the production of polyether urethane foam, and as a blowing agent for extruded polysulfone foam.
6. used to make decaffeinated coffee. The coffee is first steamed to dissolve the caffeine and float on the surface, and then use methylene chloride to remove the caffeine. 
7. Used as a processing solvent in the production of drugs, medicines and film coatings.
8. Used as a metal cleaning and finishing solvent in electronic products.