Hexanoic acid, 2,2-dihydroxy-3,3,4,4,5,5,6,6,6-nonafluoro-, compd. with piperidine MO7258000 Piperidine compd. with 2,2-dihydroxy-3,3,4,4,5,5,6,6,6-nonafluorohexanoic acid alpha,alpha-Dihydroxynonafluorohexanoic acid piperidinium salt