Benzenesulfonicacid,4-[[1,3,4,5,5,5-hexafluoro-1-(pentafluoroethyl)-2,4-bis(trifluoromethyl)-2-pentenyl]oxy]-,sodium salt (9CI), SODIUM 4-[[1,3,4,5,5,5-HEXAFLUORO-1-(PENTAFLUOROETHYL)-2,4-BIS(TRIFLUOROMETHYL)-2-PENTENYL]OXY]BENZENESULFONATE, Benzenesulfonic acid,4-[[1,3,4,5,5,5-hexafluoro-1-(1,1,2,2,2-pentafluoroethyl)-2,4-bis(trifluoromethyl)-2-penten-1-yl]oxy]-,sodium salt (1:1)