1 1 1 2 tetrafluoroethane cas number July 8, 2019 16 32 64 128 1 1 2 2-tetrafluoroethane 1 1 2 2-tetrafluoroethyl 2 2 3 3-tetrafluoropropyl ether (tte) 1 1 2 2-tetrafluoroethyl 2 2 2-trifluoroethyl ether
