2,3-Dihydroxy-6-sulfonaphthalene, dibenzenesulfonate, sodium salt 2-Naphthalenesulfonic acid, 6,7-bis((phenylsulfonyl)oxy)-, sodium salt 6,7-Dihydroxy-2-naphthalenesulfonic acid, dibenzenesulfonate, sodium salt 63251-43-4 EINECS 264-049-1 Sodium 6,7-bis((phenylsulphonyl)oxy)naphthalene-2-sulphonate