1,1-Dichloro-1-fluoroethane

C=black, H=white, F=yellow, Cl=green | Structures of 1,1-dichloro-1-fluoroethane | C=black, H=white, F=yellow, Cl=green | | Structures of 1,1-dichloro-1-fluoroethane | C=black, H=white, F=yellow, Cl=green | | | Preferred IUPAC name 1,1-Dichloro-1-fluoroethane | | | | Other names Dichlorofluoroethane; R-141b; HCFC-141b | | | | CAS Number | .mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}1717-00-6 Y | | | 3D model (JSmol) | Interactive image | | | ChemSpider | 14829 Y | | | ECHA InfoCard | 100.100.575 | | | EC Number | 404-080-1 | | | PubChem CID | 15586 | | | RTECS number | KI0997000 | | | UNII | O1A3ASY5PW N | | | UN number | 9274 | | | CompTox Dashboard (EPA) | DTXSID2020422 | | | InChI InChI=1S/C2H3Cl2F/c1-2(3,4)5/h1H3 YKey: FRCHKSNAZZFGCA-UHFFFAOYSA-N YInChI=1/C2H3Cl2F/c1-2(3,4)5/h1H3Key: FRCHKSNAZZFGCA-UHFFFAOYAI | | | | SMILES ClC(Cl)(F)C | | | | Chemical formula | C2H3Cl2F | | | Molar mass | 116.94 g·mol−1 | | | Appearance | Colorless liquid, ethereal odor | | | Density | 1.25 g/cm3 at 20 °C | | | Melting point | −103.5 °C (−154.3 °F; 169.7 K) | | | Boiling point | 32 °C (90 °F; 305 K) | | | Solubility in water | 4 g/L (20 °C) | | | GHS labelling: | | | | Pictograms | | | | Signal word | Warning | | | Hazard statements | H412, H420 | | | Precautionary statements | P273, P501, P502 | | | Autoignitiontemperature | 532 °C (990 °F; 805 K) | | | Explosive limits | 5.6–17.7% vol. | | | Lethal dose or concentration (LD, LC): | | | | LD50 (median dose) | 5 g/kg (rat, oral) | | | Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?)

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1,1-Dichloro-1-fluoroethane is a haloalkane with the formula C

2H

3Cl

2F. It is one of the three isomers of dichlorofluoroethane. It belongs to the hydrochlorofluorocarbon (HCFC) family of man-made compounds that contribute significantly to both ozone depletion and global warming when released into the environment.

1,1-Dichloro-1-fluoroethane can be a non-flammable, colourless liquid under room-temperature atmospheric conditions. The compound is very volatile with a boiling point of 32°C. Its critical temperature is near 204°C. Its smell has been described as "usually ethereal" (like ether).

1,1-Dichloro-1-fluoroethane is mainly used as a solvent and foam blowing agent under the names R-141b and HCFC-141b. It is a class 2 ozone depleting substance undergoing a global phaseout from production and use under the Montreal Protocol since the late 1990s. It is being replaced by HFCs within some applications.

Growth of HCFC-141b in Earth's atmosphere since year 1993.

HCFC-141b measured by the Advanced Global Atmospheric Gases Experiment (AGAGE) in the lower atmosphere (troposphere) at stations around the world. Abundances are given as pollution free monthly mean mole fractions in parts-per-trillion.

The concentration of HCFC-141b in the atmosphere grew to near 25 parts per trillion by year 2016. It has an ozone depletion potential (ODP) of 0.12. This is low compared to the ODP=1 of trichlorofluoromethane (CFC-11, R-11), which also grew about ten times more abundant in the atmosphere prior to introduction of HFC-141b and subsequent adoption of the Montreal Protocol.

HFC-141b is also a minor but potent greenhouse gas. It has an estimated lifetime of about 10 years and a 100-year global warming potential ranging 725 to 2500. This compares to the GWP=1 of carbon dioxide, which had a much greater atmospheric concentration near 400 parts per million in year 2020.

• IPCC list of greenhouse gases
• List of refrigerants