Chlorotrifluoromethane

Structural formula
General
Surname	Chlorotrifluoromethane
other names	Monochlorotrifluoromethane R-13 Freon 13
Molecular formula	CClF 3
Brief description	colorless, odorless gas with a sweet smell in higher concentrations
External identifiers / databases
CAS number 75-72-9 EC number 200-894-4 ECHA InfoCard 100,000,814 PubChem 6392 Wikidata Q423046
properties
Molar mass	104.46 g mol −1
Physical state	gaseous
density	4.718 kg m −3 under normal conditions (0 ° C, 1013 mbar) 1.524 kg · l −1 of the liquid phase at the boiling point
Melting point	−189 ° C
boiling point	−81.4 ° C
Vapor pressure	3.18 M Pa (20 ° C)
solubility	practically insoluble in water soluble in ethanol and diethyl ether
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 280-420 P: 410 + 403
MAK	DFG : 1000 ml m −3 or 4300 mg m −3 Switzerland: 1000 ml m −3 or 4330 mg m −3
Global warming potential	15451 (based on 100 years)
Thermodynamic properties
ΔH f 0	−706.3 kJ / mol
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Chlorotrifluoromethane is a chemical compound from the group of aliphatic , saturated halogenated hydrocarbons ( CFC ).

Extraction and presentation

Chlorotrifluoromethane can be obtained by reacting methane with chlorine and hydrogen fluoride with aluminum chloride as a catalyst.

properties

Chlorotrifluoromethane is a colorless, odorless gas that in higher concentrations has a sweet smell, similar to carbon tetrachloride . The compound decomposes above 150 ° C. It has a critical temperature of 28.78 ° C, a critical pressure of 38.6 bar, a critical density of 0.581 kg / l and a triple point temperature of −189 ° C.

use

Chlorotrifluoromethane was previously used as a refrigerant under the name R 13 or Freon 13 . Due to its global warming potential of 14,000 and its ozone depletion potential of 1, further production was prohibited in the future in the Montreal Protocol .

Individual evidence

1. ↑ ^{a b c d e f g h i j} Entry on chlorotrifluoromethane in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
2. ^ William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2016, ISBN 978-1-4398-8050-0 , pp. 120 ( limited preview in Google Book search).
3. ↑ Honeywell: R 13 (PDF; 26 kB)
4. ↑ Swiss Accident Insurance Fund (Suva): Limit values ​​- current MAK and BAT values (search for 75-72-9 or chlorotrifluoromethane ), accessed on November 2, 2015.
5. ↑ G. Myhre, D. Shindell et al .: Climate Change 2013: The Physical Science Basis . Working Group I contribution to the IPCC Fifth Assessment Report. Ed .: Intergovernmental Panel on Climate Change . 2013, Chapter 8: Anthropogenic and Natural Radiative Forcing, pp. 24-39; Table 8.SM.16 ( PDF ).
6. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-19.
7. ↑ cfc.com: Chlorotrifluoromethane .