Sodium perborate (nabo3) tetrahydrate10486-00-7100 % similar Sodium perborate monohydrate10332-33-986 % similar Sodium perborate7632-04-450 % similar Sodium tetraborate pentahydrate12179-04-338 % similar Sodium sulfide nonahydrate1313-84-438 % similar Sodium chromate tetrahydrate10034-82-933 % similar Sodium metaborate tetrahydrate10555-76-733 % similar