1,2-Dichloro-l, 1,2,2-tetrafluoroethane

The ACF/HFP system can be used for the conversion of 1,2-dichloro-l, 1,2,2-tetrafluoroethane (CF2C1CF2C1) into 1,1-dichloro-1,2.2,2-tetrafluoroethanc (CFC12CF3), 2,3-dichloroocta-fluorobutane (CF3CFC1CFC1CF3) into 2,2-dichlorooctafluorobutanc (CF3CC12CF2CF3),... 

Freon 114 1,2-dichloro-l,1,2,2-tetrafluoroethane Arcton 114 20 8 No attack little or no absorption Victrex LNP Engineering Plastics... 

Dichloro-l,l,2,2-tetrafluoroethane (Propellant 114), physical properties of, 2 776t... 

Using aluminum trifluoridc the disproportionation of 1.2-dichloro-l,1.2.2-tetrafluoro-ethane can be inhibited by the addition of hydrogen fluoride to the feed, which, however, increases the isomerization rate of 1.2-dichloro-l,l,2.2-tetrafluoroethane to 1,1-dichloro-... 

Mishima, K. Hongo, M. Takagi, T. Aral, Y. Bubble point pressures for chlorodifluoromethane + l,2-dichloro-l,l,2,2-tetrafluoroethane, bromotrifluoromethane -1- l,2-dichloro-l,l,2,2-tetrafluoroethane, and bromotrifluoromethane + chloropentafluoroethane J. Chem. Eng. Data 1993,38, 49-52... 

Manganese and chromium powders have also been reported to activate aluminum trichloride.32 Thus, l,2-dichloro-l,l,2,2-tetrafluoroethanc (CF2ClCF Cl) can be converted into l,l-dichloro-l,2,2,2-tetrafluoroethane(CFCl2CF3), and chlorofluoroethane 1 into 2 under mild conditions and in high yield. 

Components 1. C2H2F4, 1,1,1,2-Tetrafluoroethane [811-97-2] 2. C2H3CI2F, 1,1-Dichloro-l-fluoroethane [1717-00-6] ... 

Although antimony pentafluonde can fluorinate l,l,2-tnchloro-l,2,2-trifluo-roethane to chloropentafluoroethane, this route is not used industnally because antimony pentafluonde and hydrogen fluoride are too corrosive. Both dichloro-tetrafluoroethane and chloropentafluoroethane are produced by vapor-phase fluor-ination of tetrachloroethene with proprietary chromia catalysts at 300 to 500 °C (equation 1). 

This report is the second volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals. AEGL reports for aniline, arsine, monomethylhydrazine, and dimethylhydrazine were reviewed in the first volume. AEGL documents for five chemicals—phosgene, propylene glycol dinitrate, 1,1,1,2-tetrafluoroethane, 1,1-dichloro-l-fluoroethane, and hydrogen cyanide—are published as an appendix to this report. The subcommittee... 

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