POTASSIUM SODIUM TARTRATE

Chemical Name:potassium sodium tartrate
Scientific Name: rochelle salt
Molecular Formular: KNaC4H4O6·4H2O
Molecular Weight: 282.23 C 22.86%, H 1.92%, K 18.60%, Na 10.94%, O45.68%
Chacater: Colorless crystals or white crystal,specific gravity is 1.79,PH value is 6.8~8,the melting point is 70~80°C.Have minute efflorescence in the heat air,lose some water when heated to 60°C,and lose 3 water molecules at 100°C,become salt without water at 215°C. Freely insoluble in water, the solution assumes minute alkalescence.
Specification:complies with US FCC(III) & Q/HG010-90