Trichloromethane
Trichloromethane
CAS: 67-66-3
Molecular Formula: CHCl3
Trichloromethane - Names and Identifiers
| Name | Trichloromethane |
| Synonyms | R 20 Chloroform trichloroform Refrigerant R20 Trichloromethane Methyl trichloride formyl trichloride r 20 (refrigerant) methane trichloride methenyl trichloride |
| CAS | 67-66-3 |
| EINECS | 200-663-8 |
| InChI | InChI=1/3CH4.3ClH/h3*1H4;3*1H/p-3 |
Trichloromethane - Physico-chemical Properties
| Molecular Formula | CHCl3 |
| Molar Mass | 119.38 |
| Melting Point | -63℃ |
| Water Solubility | 8 g/L (20℃) |
| Physical and Chemical Properties | Colorless transparent, high refractive index, volatile liquid. There is a special sweet smell. melting point -63.2 ℃ boiling point 61.3 ℃ relative density 1.4832 refractive index 1.4422 solubility in ethanol, ether, benzene, petroleum ether, carbon tetrachloride, carbon disulfide and volatile oil miscible, slightly soluble in water (25 deg C when 1ml dissolved in about 200ml water). |
| Use | Used as a solvent, Freon raw materials, but also used in plastics, pharmaceuticals, pesticides and spices and other industries |
Trichloromethane - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R38 - Irritating to the skin R40 - Limited evidence of a carcinogenic effect |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 1888 |
Trichloromethane - Upstream Downstream Industry
Trichloromethane - Nature
Open Data Verified Data
colorless transparent liquid. Strong refraction. There is a special odor. Sweet. Not easy to burn. Oxidation in the presence of sunlight or in the air gradually decomposes and produces phosgene (phosgene). Thus, it is common to add 1% ethanol as a stabilizer. With ethanol, ether, benzene, petroleum ether, carbon tetrachloride, carbon disulfide, oil phase miscible, ImL the soluble in about 200mL water (25 ° C). Generally do not burn, but long exposure to open fire and high temperature can still burn. In excess water, light, high temperature decomposition will occur, the formation of highly toxic corrosive phosgene and hydrogen chloride. Alkali-like strong alkali and potassium hydroxide can decompose chloroform into chlorate and formate. Under the action of strong alkali and water, explosives can be formed. High temperature contact with water, corrosive, corrosive to iron and other metals, corrosive to plastics and rubber.
Last Update：2024-01-02 23:10:35
Trichloromethane - Preparation Method
Open Data Verified Data
The industrial chloroform is washed with water to remove ethanol, aldehyde and hydrogen chloride, and then washed with concentrated sulfuric acid and sodium hydroxide solution in sequence. The water phase should be alkaline and washed twice. After drying with anhydrous calcium chloride, pure chloroform was obtained by distillation.
Last Update：2022-01-01 09:25:00
Trichloromethane - Use
Open Data Verified Data
determination of cobalt, manganese, Iridium, iodine, phosphorus extraction agent. Determination of serum inorganic phosphorus, organic glass, fat, rubber resin, alkaloids, wax, phosphorus, iodine solvent.
Last Update：2022-01-01 09:25:00
Trichloromethane - Safety
Open Data Verified Data
LD50 (14 days) rats oral: 2180mL/kg.
Last Update：2022-01-01 09:25:01
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