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Dichloromonofluoromethane
Dichloromonofluoromethane
- CAS:
- 75-43-4
- MF:
- CHCl2F
- MW:
- 102.92
Properties
- Melting point:
- -135°C
- Boiling point:
- 8.9°C
- Density
- 1,354 g/cm3
- vapor pressure
- 1,216 at 11.8 °C (NIOSH, 1997)
- refractive index
- 1.3540
- solubility
- Soluble in acetic acid, alcohol, and ether (Weast, 1986)
- form
- Colorless gas
- color
- Colorless liquid or gas with an ether-like odor
- Water Solubility
- 0.7 wt % at 30 °C (NIOSH, 1997)
- Exposure limits
- NIOSH REL: TWA 10 ppm (40 mg/m3), IDLH 5,000 ppm; OSHA PEL: TWA 1,000 ppm (4,200 mg/m3); ACGIH TLV: TWA 10 ppm (adopted).
- Dielectric constant
- 5.3（28℃）
- NIST Chemistry Reference
- Methane, dichlorofluoro-(75-43-4)
- EPA Substance Registry System
- HCFC-21 (75-43-4)
Safety Information
- Symbol(GHS)
GHS04
- Signal word
- Danger
- Hazard statements
- H280
- Precautionary statements
- P410+P403
- Hazard Codes
- N
- Risk Statements
- 59
- Safety Statements
- 59
- RIDADR
- 1029
- OEB
- A
- OEL
- TWA: 10 ppm (40 mg/m3)
- RTECS
- PA8400000
- HazardClass
- 2.2
- Hazardous Substances Data
- 75-43-4(Hazardous Substances Data)
- Toxicity
- LC50 (inhalation) for rats 49,900 ppm/4-h (quoted, RTECS, 1985).
- IDLA
- 5,000 ppm
Use
Dichloromonofluoromethane is a colorless, odorless gas. Dichloromonofluoromethane is shipped as a liquid under its own vapor pressure. Contact with the liquid may cause frostbite to unprotected skin. Dichloromonofluoromethane can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire may cause Dichloromonofluoromethane to rupture violently and rocket.
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