Synonyms: Potassium sodium tartrate tetrahydrate, Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate, Potassium sodium L(+)-tartrate tetrahydrate, Sodium potassium tartrate, (R,R)-(+)-Tartaric acid potassium sodium salt tetrahydrate, (R,R)-(+)-Potassium sodium tartrate tetrahydrate, Rochelle salt, L(+)-Tartaric acid potassium sodium salt tetrahydrate, (+)-Potassium sodium L-tartrate tetrahydrate