disodium 7-hydroxynaphthalene-1,3-disulphonate

7-Hydroxy-1,3-Naphthalenedisulfonic Acid,Disodium

7-Hydroxy-1,3-naphthalenedi(sulfonic acid sodium) salt

2-Hydroxynaphthalene-6,8-disulfonic acid disodium salt

7-Hydroxy-1,3-Naphthalenedisulfonic Acid Disodium Salt

7-Hydroxynaphthalene-1,3-bis(sulfonic acid sodium) salt