Synonyms: 1,3-Naphthalenedisulfonicacid, 7-hydroxy-, disodium salt (8CI,9CI); 2-Naphthol-6,8-disulfonic aciddisodium salt; 7-Hydroxy-1,3-naphthalenedisulfonic acid disodium salt; Disodium2-hydroxy-6,8-naphthalenedisulfonate; Disodium7-hydroxy-1,3-naphthalenedisulfonate; G Salt; G acid disodium salt