1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-Pentadecafluoroheptane-1-sulphonic acid 1-Heptanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro- 375-92-8 EINECS 206-800-8 Pentadecafluoro-1-heptanesulfonic acid