EINECS 246-793-9, 2-Naphthylamine-1-sulfonic Acid Sodium Salt, Sodium 2-aminonaphthalene-1-sulphonate, 2-amino-1-naphthalenesulfonic acid sodium, Sodium 2-Amino-1-naphthalenesulfonate, sodium 2-aminonaphthalene-1-sulfonate, 2-Amino-1-naphthalenesulfonic Acid Sodium Salt, Tobias Acid Sodium Salt