Synonyms: 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, compd. with 2,2'-iminobis(ethanol) (1:1);Nonafluoro-1-butanesulfonic acid, compd. with diethanolamine;1,1,2,2,3,3,4,4,4-Nonafluorobutane-1-sulphonic acid, compound with2,2'-iminodiethanol (1:1);1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonic acid - 2,2'-iminodiethanol (1:1)