1,2-Dichloro-1,1-difluoroethane

1,2-Dichloro-1,1-difluoroethane
Names
	Other names R-132b, HCFC-132b
Identifiers
CAS Number	1649-08-7;
3D model (JSmol)	Interactive image;
ChemSpider	14694;
ECHA InfoCard	100.015.196
EC Number	216-714-2;
PubChem CID	15442;
UNII	K90K8VM1NQ;
UN number	3082
CompTox Dashboard (EPA)	DTXSID5031393 ;
	InChI InChI=1S/C2H2Cl2F2/c3-1-2(4,5)6/h1H2 Key: SKDFWEPBABSFMG-UHFFFAOYSA-N;
	SMILES C(C(F)(F)Cl)Cl;
Properties
Chemical formula	C2H2Cl2F2
Molar mass	134.93 g·mol−1
Appearance	colorless liquid
Density	1.42 g/ml (at 20 °C)
Melting point	−101.2 °C (−150.2 °F; 172.0 K)
Boiling point	46.8 °C (116.2 °F; 319.9 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

1,2-Dichloro-1,1-difluoroethane (also R-132b or HCFC-132b) is a haloalkane and a hydrochlorofluorocarbon. It is an intermediate during the production of HFC-134a.^[2]^{: Figure 7-2} According to a 2022 report by the WMO and other agencies, it has an ODP of 0.038 and a 100-year GWP of 332.^[2]^{: Table A-5} It has been detected in the atmosphere at concentrations of up to 0.17 parts per trillion, probably because of its use during the production of other chemicals. Most emissions seem to come from East Asia.^[3]

References

^ ^a ^b ^c ^d Partially halogenated chlorofluorocarbons (ethane derivatives), WHO, 1992. International Programme on Chemical Safety; published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization. Series: Environmental Health Criteria, #139. ISBN 92-4-157139-X, ISSN 0250-863X. Accessed 2024-01-15.
^ ^a ^b Scientific Assessment of Ozone Depletion 2022, Ozone Research and Monitoring – GAW Report No. 278, World Meteorological Organization. Accessed 2024-01-15.
^ "Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons", Martin K. Vollmer, et al., Proceedings of the National Academy of Sciences, 118, #5 (February 2, 2021), e2010914118, doi:10.1073/pnas.2010914118.

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[ehc139-1] Partially halogenated chlorofluorocarbons (ethane derivatives), WHO, 1992. International Programme on Chemical Safety; published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization. Series: Environmental Health Criteria, #139. ISBN 92-4-157139-X, ISSN 0250-863X. Accessed 2024-01-15.

[ozone2022-2] Scientific Assessment of Ozone Depletion 2022, Ozone Research and Monitoring – GAW Report No. 278, World Meteorological Organization. Accessed 2024-01-15.

[vollmer2021-3] "Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons", Martin K. Vollmer, et al., Proceedings of the National Academy of Sciences, 118, #5 (February 2, 2021), e2010914118, doi:10.1073/pnas.2010914118.

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