Cryofluoran

Structural formula
Wedges to clarify the geometry
General
Surname	Cryofluoran
other names	1,2-dichloro-1,1,2,2-tetrafluoroethane 1,1,2,2-tetrafluoro-1,2-dichloroethane Cryoflurane R-114 Frigen 114 Freon 114
Molecular formula	C 2 Cl 2 F 4
Brief description	non-flammable colorless odorless gas (at high concentration with a sweetish chloroform-like odor)
External identifiers / databases
CAS number 76-14-2 EC number 200-937-7 ECHA InfoCard 100,000,853 PubChem 6429 Wikidata Q420380
properties
Molar mass	170.92 g mol −1
Physical state	gaseous
density	7.67 kg m −3 (gaseous, 0 ° C)
Melting point	−94 ° C
boiling point	3.6 ° C
Vapor pressure	182 k Pa (20 ° C)
solubility	very bad in water (110 mg l −1 )
Refractive index	1.3092 (0 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 280-420 P: 273-410 + 403-501
MAK	DFG : 1000 ml m −3 or 7100 mg m −3 Switzerland: 1000 ml m −3 or 7000 mg m −3
Global warming potential	9615 (based on 100 years)
Thermodynamic properties
ΔH f 0	−937.0 kJ / mol
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Cryofluoran is a chemical compound from the group of chlorofluorocarbons (CFC), which was mainly used as a refrigerant and as a propellant for spray cans . Under pressure or when cooled, the gas is a colorless liquid. It is on the list of climate-damaging gases of the Intergovernmental Panel on Climate Change .

use

In addition to being a refrigerant, Cryofluoran was used as a foaming agent for fire extinguishers and foams and as a solvent and cleaning agent in the electronics industry. Another area of ​​application is the isolation of highly stressed probe heads in measurement technology .

safety instructions

As with all CFCs, the decomposition (through intense heat) of Cryofluoran forms corrosive and toxic substances ( hydrochloric acid , hydrofluoric acid ).

Individual evidence

1. ↑ ^{a b c d e f g h} Entry on Cryofluoran in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
2. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-160.
3. ↑ Data sheet 1,2-dichlorotetrafluoroethane from Sigma-Aldrich , accessed on May 7, 2015 ( PDF ).
4. ↑ Swiss Accident Insurance Fund (Suva): Limit values ​​- current MAK and BAT values (search for 76-14-2 or Cryofluoran ), 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. 5-21.
7. ↑ Fluoride Action Network Pesticide Project: Dichlorotetrafluoroethane (76-14-2)
8. ↑ amplifier.cd: P6015A High Voltage Probe