Name | Dichloromethane |
Synonyms | R 30 narkotil solaesthin solmethine Plastisolve Refrigerant 30 Dichloromethane Methane dichloride Methylene chloride Methylene dichloride |
CAS | 75-09-2 |
EINECS | 200-838-9 |
InChI | InChI=1/CH2Cl2/c2-1-3/h1H2 |
Molecular Formula | CH2Cl2 |
Molar Mass | 84.93 |
Density | 1.325 |
Melting Point | -97℃ |
Boling Point | 39-40℃ |
Water Solubility | 20 g/L (20℃) |
Refractive Index | 1.4242 |
Physical and Chemical Properties | Appearance and properties: colorless transparent liquid, aromatic odor. melting point (℃): -96.7 boiling point (℃): 39.8 relative density (water = 1): 1.33 relative vapor density (Air = 1): 2.93 saturated vapor pressure (kPa): 30.55(10 ℃) heat of combustion (kJ/mol): 604.9 critical temperature (℃): 237 critical pressure (MPa): 6.08 logarithm of octanol/water partition coefficient: 1.25 ignition temperature (℃): 615 Upper Explosive limit%(V/V): 19 lower explosive limit%(V/V): 12 solubility: slightly soluble in water, soluble in ethanol, ether. |
Use | Used as a solvent in the resin and plastic industries. Widely used in pharmaceutical, plastic and film industries. |
Hazard Symbols | Xn - Harmful |
Risk Codes | R40 - Limited evidence of a carcinogenic effect |
Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 1593/1912 |
Raw Materials | Methyl alcohol Chlorine |
Downstream Products | Triazophos Chlorimuron-ethyl Amoxicillin Cefradine nimesulide Mitomycin Adriamycin |
colorless transparent volatile liquid. Has a pungent odor similar to that of an ether. Soluble in about 50 times of water, soluble in phenol, aldehyde, ketone, glacial acetic acid, triethyl phosphate, ethyl acetoacetate, cyclohexylamine. Mixed with other chlorinated hydrocarbon solvents and ethanol, diethyl ether and N,N-dimethylformamide
Soluble. The relative density was 1. 3266. Melting Point -9 5.1 °c. The boiling point was 40 °c. Spontaneous ignition point 640. Viscosity (20 deg C) 0.43mPa.s. Refractive index 4244. The critical temperature is 245 ℃ and the critical pressure is 6. 171MPa. After pyrolysis, HC1 and trace amounts of phosgene were generated, and the formaldehyde and HC1 were generated by long-term heating with water. Further chlorination, CHCl3 and CCl4 were obtained.
This product is not only used for organic synthesis, but also widely used as cellulose acetate film, cellulose triacetate spinning, petroleum dewaxing, aerosol and antibiotics, vitamins, steroids in the production of solvents, and the metal surface paint layer cleaning degreasing and stripping agent. In addition, it is also used for grain fumigation and refrigeration of low-pressure refrigerators and air conditioners. It is used as an auxiliary blowing agent in the production of Polyether urethane foams and as a blowing agent for extruded polysulfone foams.