Molecular formula is CH2Cl2. It is nonflammable solvent with low boiling point. It is commonly used to replace inflammable petroleum ether, diethyl ether, and etc.
| Product name | Dichloromethane |
|---|---|
| English name | Dichloromethane |
| Molecular formula | CH2Cl2 |
| Molecular weight | 84.93 |
| Density | 1.3266 (20/4℃) |
| Melting point | -95.1℃ |
| Boiling point | 39.8℃ |
| Solubility | Souble in about 50 times of the water, phenol, aldehyde, ketone, glacial acetic acid, triethyl phosphate, ethyl acetoacetate, and cyclohexane. Dissolved in other hydrochloric ether solvents, ethyl alohol, diethyl ether, and N,N-Dimethylformamide |
| Vapor pressure | 30.55kPa (10℃) |
| Appearance and properties | Colorless and transparent volatile liquid with irritant ether-like odor |
| CAS RN | 75-09-2 |
| EINECS No. | 200-838-9 |
| Stability | Dichloromethane is more stable than its counterparts (chloroform and carbon tetrachloride) when there is no moisture at normal temperature (room temperature) |
| Hazard decomposition | Long-term contact with water will slowly break down to produce hydrogen chloride |
Colorless volatile liquid, nonflammable. In industry, dichloromethane is made from the reaction of natural gas and chlorine. It is an excellent solvent that can be used to replace inflammable petroleum ether, diethyl ether and other products. Moreover, it can also be used as local anesthetics in dentistry, refrigerant and fire extinguishing agent.
Molecular structure data
1. Molar refractive index: 16.38
2. Molar volume (m3/mol): 67.8
3. Parachor (90.2K): 148.8
4. Surface tension (dyne/cm): 23.1
5. Polarizability: 6.49
Dichloromethane is extensively used in producing filmstrip and polycarbonate as advantages such as good dissolving capacity and low toxicity. The rest is used as coating solvent, metal degreasant, smog propellant, PU foaming agent, release agent and paint remover.
Dichloromethane is used as reaction medium in pharmaceutical industry and in preparing penbritin, benzylpenicillin, and cephalosporin.
Dichloromethane is mainly used in film production and pharmaceutical industry in China.
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