Dichloromethane formula: CH2Cl2. Colorless, transparent liquid, aromatic odor. Slightly soluble in water. Chinese name English name dichloromethane aka dichloromethane DCM formula CH2Cl2 molecular 84.93 CAS Registry Number 75-09-2 EINECS No. 200-838-9 Log [2] Melting point -97 ° C [3] the boiling point of 39.8 ℃ water soluble 20g / L ( 20 ℃) ??density of 1.325 g / mL at 25 ° C (lit.) [3] was dissolved in dichloromethane with a strong and low toxicity advantages, a large number for the manufacture of security footage, polycarbonate, and the rest used as paint solvents, metal degreasing agents, aerosol propellant gas, polyurethane foam, mold release agents, paint remover.