Synonyms: Naphthalenesulfonic acid, diisononyl-, compd. with 1,2-ethanediamine (2:1);Diisononylnaphthalenesulfonic acid, compd. with 1,2-ethanediamine (2:1);Diisononylnaphthalenesulphonic acid, compound with ethane-1,2-diamine (2:1);2,3-bis(7-methyloctyl)naphthalene-1-sulfonic acid - ethane-1,2-diamine (2:1)