Synonyms: Phthalicacid, 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]di- (7CI);Phthalicacid, 4,4'-[trifluoro-1-(trifluoromethyl)ethylidene]di- (8CI);2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane;2,2-Bis(3,4-dicarboxyphenyl)perfluoropropane;4,4'-Hexafluoroisopropylidenebis(phthalic acid);4,4'-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis(1,2-benzenedicarboxylicdianhydride);4,4'-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis[phthalicacid];