Synonyms: 2,7-Naphthalenedisulfonicacid, 4-amino-5-hydroxy-, disodium salt (8CI,9CI); 1-Naphthol-8-amino-3,6-disulfonicacid disodium salt; Disodium 1-amino-8-hydroxy-3,6-naphthalenedisulfonate;Disodium 1-amino-8-naphthol-3,6-disulfonate; Disodium4-amino-5-hydroxy-2,7-naphthalenedisulfonate; Disodium8-amino-1-naphthol-3,6-disulfonate; H Acid disodium salt; Sodium1-amino-8-hydroxy-3,6-naphthalenedisulfonate