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1,2-Dibromotetrafluoroethane (C 2 Br 2 F 4) is a haloalkane. It is also known under codenames R-114B2 and Halon 2402. It is a colorless liquid with a boiling point of 47.2 °C. R-114B2 is occasionally used in fire suppression systems. It is highly volatile, passes through soil to air, and can be detected in the parts-per-quadrillion range.
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 1,1,2,2-Tetrafluoroethane (also called R-134 or HFC-134) is a hydrofluorocarbon, a fluorinated alkane. It is an isomer of the more-used 1,1,1,2-tetrafluoroethane (R-134a). It is used as a foam expansion agent and heat transfer fluid.
Uses. 1,1,1,2-Tetrafluoroethane is a non-flammable gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners. These devices began using 1,1,1,2-tetrafluoroethane in the early 1990s as a replacement for the more environmentally harmful R-12. Retrofit kits are available to convert units that ...
Solubility in water at 25 °C and 1 atm 0.15% by weight Solubility of water in HFC-134a at 25 °C 0.11% by weight Flammability Limits in Air at 1 atm None Autoignition temperature 770 °C (1,420 °F) Ozone depletion potential: 0 Halocarbon Global Warming Potential (HGWP) (For CFC-11, HGWP = 1) 0.28 Global Warming Potential (GWP) (100 yr ITH ...
1,2-Difluoroethane is a saturated hydrofluorocarbon containing an atom of fluorine attached to each of two carbons atoms. The formula can be written CH 2 FCH 2 F. It is an isomer of 1,1-difluoroethane. It has a HFC name of HFC-152 with no letter suffix. [3] When cooled to cryogenic temperatures it can have different conformers, gauche and trans ...
Fluoroform, or trifluoromethane, is the chemical compound with the formula CHF3. It is a hydrofluorocarbon as well as being a part of the haloforms, a class of compounds with the formula CHX3 (X = halogen) with C 3v symmetry. Fluoroform is used in diverse applications in organic synthesis.
A convenient, safe method for generating TFE is the pyrolysis of the sodium salt of pentafluoropropionic acid: [6]. C 2 F 5 CO 2 Na → C 2 F 4 + CO 2 + NaF. The depolymerization reaction – vacuum pyrolysis of PTFE at 650–700 °C (1,200–1,290 °F) in a quartz vessel – is a traditional laboratory synthesis of TFE.
Infobox references. 1,1-Difluoroethane, or DFE, is an organofluorine compound with the chemical formula C 2 H 4 F 2. This colorless gas is used as a refrigerant, where it is often listed as R-152a (refrigerant-152a) or HFC-152a (hydrofluorocarbon -152a). It is also used as a propellant for aerosol sprays and in gas duster products.