1,1-difluoroperchloroethane
1,1-DIFLUOROTETRACHLOROETHANE
CAS: 76-11-9
Molecular Formula: C2Cl4F2
1,1-difluoroperchloroethane - Names and Identifiers
1,1-difluoroperchloroethane - Physico-chemical Properties
| Molecular Formula | C2Cl4F2 |
| Molar Mass | 203.83 |
| Density | 1.64 |
| Melting Point | 39-44 °C |
| Boling Point | 91-91 °C |
| Flash Point | 90-92°C |
| Vapor Presure | 40 at 20 °C (NIOSH, 1997) |
| Appearance | Color Colorless solid with a fail ether-like odor |
| Storage Condition | Refrigerator (+4°C) |
| Refractive Index | 1.4046 |
| Physical and Chemical Properties | Chemical properties Melting point 38-40 ℃, boiling point 91 ℃, relative density (20/4 ℃)1.65. |
| Use | Uses intermediates of the anesthetic agent methoxyflurane. |
1,1-difluoroperchloroethane - Risk and Safety
| Hazard Symbols | N - Dangerous for the environment Xi,Xi - |
| Risk Codes | R59 - Dangerous for the ozone layer R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S59 - Refer to manufacturer / supplier for information on recovery / recycling. S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| HS Code | 29034520 |
| Toxicity | LD50 oral in rat: > 8gm/kg |
1,1-difluoroperchloroethane - Upstream Downstream Industry
| Raw Materials | Aluminum chloride 1,2-DIFLUOROTETRACHLOROETHANE |
1,1-difluoroperchloroethane - Nature
| solubility | Soluble in alcohol, ether, and chloroform (Weast, 1986) |
| color | Colorless solid with a faint ether-like odor |
| exposure limit | NIOSH REL: TWA 500 ppm (4,170 mg/m3), IDLH 2,000 ppm; OSHA PEL: TWA 500 ppm; ACGIH TLV: TWA 500 ppm (adopted). |
| NIST chemical information | 1,1,1,2-Tetrachlorodifluoroethane(76-11-9) |
| EPA chemical information | CFC-112a (76-11-9) |
Last Update：2024-04-10 22:29:15
1,1-difluoroperchloroethane - Uses and synthesis methods
production method
under stirring, anhydrous aluminum trichloride is quickly added into the melted freon 112, kept warm and stirred for 2-3h, then heated to 60-70 ℃, kept warm and filtered, filtrate fractionated, and fraction at 91-92 ℃ is collected to obtain 2, 2-difluorotetrachloroethane. 70% yield.
category
Toxic substances
toxicity classification
low toxicity
acute toxicity
Oral-Rat LD50: > 8000 mg/kg; Inhalation-Rat LCL0: 20000 ppm/30 min
flammability hazard characteristics
Non-combustible; fire releases toxic chloride, fluoride fumes
storage and transportation features
Warehouse low temperature, ventilated, dry; closed storage
occupational standards
TWA 4170 mg/m3
Last Update：2024-04-10 22:41:03
1,1-difluoroperchloroethane - Security information
| toxic substance data | 76-11-9(Hazardous Substances Data) |
| immediate threat to life and health concentration | 2,000 ppm |
Last Update：2024-04-10 22:29:15
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Raw Materials for 1,1-difluoroperchloroethane