.beta.-Naphthol-.gamma.-disulfonic acid .beta.-Naphtholdisulfonic acid G 1,3-Naphthalenedisulfonic acid,7-hydroxy- 118-32-1 2-Hydroxy-6,8-naphthalenedisulfonic acid 2-Hydroxynaphthalene-6,8-disulfonic acid 2-Naphthol-6,8-disulfonic acid 7-Hydroxy-1,3-naphthalenedisulfonic acid G Acid NSC2073