Synonyms: Butanedioicacid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt, hydrate (2:1) (9CI);Butanedioic acid, 2,3-dihydroxy-[R-(R*,R*)]-, dipotassium salt, hydrate (2:1);Tartaric acid, dipotassium salt, hemihydrate (8CI);Dipotassium tartratehemihydrate;