Sodium 6-hydroxynaphthalene-2-sulfonate;6-Hydroxy-2-naphthalenesulfonic acid sodium salt hydrate;2-Naphthol-6-sulfonic acid sodium salt;Sodium 2-Naphthol-6-sulfonate Hydrate;6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt;2-NAPHTHOL-6-SULFONIC ACID SODIUM;2-Naphthol-6-sulfonic Acid Sodium Salt Hydrate;6-hydroxy-naphthalenesulfonic acid sodium salt;SCHAEFFER ACID;SCHAEFFERS SALT (SODIUM);Sodium 2-naphthol-6-sulfonate;sodium 6-hydroxy-2-naphthalenesulfona;Sodium 6-Hydroxy-2-naphthalenesulfonate Hydrate;Sodium 6-naphthol-2-sulfonate;6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt Hydrate;Schaeffer's Acid Sodium Salt Hydrate;2-Naphthalenesulfonicacid, 6-hydroxy-, monosodium salt (8CI,9CI);2-Naphthol-6-sodium sulfonate;2-Naphthol-6-sulfonicacid sodium salt;Schaeffer salt;Schaeffer's salt;Sodium2-naphthol-6-sulfonate;Sodium 6-hydroxy-2-naphthalenesulfonate;Sodium b-naphthol-6-sulfonate;SCHAFFER'S SALT;SCHAEFFER'S SALT;SCHAEFFER'S ACID;Sodium 6-hydroxynaph;Schaeffer's acid sodium salt;SODIUM 2-NAPHTHOL-6-SULFONATE