1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE
1,2-DIFLUOROTETRACHLOROETHANE
CAS: 76-12-0
Molecular Formula: C2Cl4F2
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Names and Identifiers
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Physico-chemical Properties
| Molecular Formula | C2Cl4F2 |
| Molar Mass | 203.83 |
| Density | 1,634 g/cm3 |
| Melting Point | 24°C |
| Boling Point | 92,8°C |
| Water Solubility | 120 mg/L at 25 °C (Du Pont, 1966) |
| Vapor Presure | 45.8 at 25 °C (Boublik et al., 1984) |
| Appearance | Morphological Colorless solid or liquid |
| Refractive Index | 1.413 |
| Physical and Chemical Properties | An inert liquid with a high boiling point and a camphor-like smell. Melting point 25 ℃, boiling point 93 ℃, relative density (25/4 ℃)1.6447, refractive index (nD25)1.4130. |
| Use | Uses for the production of refrigerant, aerosol, propellant, precision instrument cleaning agent, can be used as a resin intermediate. It can also be used for the production of a liver leech repellent for the treatment of cattle. Methoxyflurane, a new type of inhalation general anesthetic, was prepared using Freon 112 as raw material. |
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| Toxicity | LD50 (inhalation) for mice 123 gm/m3/2-h (quoted, RTECS, 1985). |
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Nature
| solubility | Soluble in alcohol, chloroform, and ether (Weast, 1986). Miscible in many halogenated hydrocarbons, e.g., chloroform, caterbon tetrachloride, etc. |
| Henry's Law Constant | 0.102(atm?m3/mol) at 25°C (approximate - calculated from water solubility and vapor pressure) |
| exposure limit | NIOSH REL: TWA 500 ppm (4,170 mg/m3), IDLH 2,000 ppm; OSHA PEL: TWA 500 ppm (adopted). |
| EPA chemical information | CFC-112 (76-12-0) |
Last Update：2024-04-10 22:29:15
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Security information
| Hazard Note | Irritant |
| toxic substance data | 76-12-0(Hazardous Substances Data) |
| immediate threat to life and health concentration | 2,000 ppm |
Last Update：2024-04-10 22:29:15
1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE - Uses and synthesis methods
production method
Hexachloroethane reacts with hydrogen fluoride in the presence of the catalyst antimony pentachloride. The reaction product is washed with alkali, washed with water, fractionated, and purified to obtain trifluorotrichloroethane. At the same time, it is a by-product of freon 112.
category
Toxic substances
toxicity classification
Poisoning
acute toxicity
oral-mouse LD50: 800 mg/kg
flammability hazard characteristics
Non-combustible; toxic chloride and fluoride gas produced in the fire scene
storage and transportation features
Warehouse ventilation and low temperature drying
fire extinguishing agent
Dry powder, foam, sand, water
occupational standards
TLV-TWA 4170 mg/m3
Last Update：2024-04-10 22:29:15