Synonyms: 2-Naphthalenecarboxylicacid, 4,4'-methylenebis[3-hydroxy-, disodium salt (9CI);2-Naphthoic acid,4,4'-methylenebis[3-hydroxy-, disodium salt (6CI,7CI,8CI);Disodium1,1'-methylenebis(2-hydroxy-3-naphthoate);Disodium embonate;Disodium pamoate;Pamoic acid disodium salt;Sodium pamoate;