1,6-Naphthalenedisulfonic acid, 8-amino- 1-Amino-3,8-disulfonaphthalene 1-Naphthylamine, 3,8-disulfo- 1-Naphthylamine-3,8-disulfonic acid 129-91-9 8-Amino-1,6-naphthalenedisulfonic acid 8-Aminonaphthalene-1,6-disulphonic acid Aminoepsilon acid EINECS 204-969-2 Epsilon acid NSC 5524