SPECIFICATIONS

POTASSIUM SODIUM TARTRATE TETRAHYDRATE ACS

Synonyms:				2,3-Dihydroxybutanedioic Acid, Potassium Sodium Salt Tetrahydrate
					Rochelle Salt, Seignette Salt
    
CAS No:				6381-59-5

Formula:				KOCOCH(OH)CH(OH)COONa * 4H2O

F.W.:					282.22

Description:				Colorless to White powder 

Assay:					99.0 – 102.0 %

pH of a 5% solution:		6.0 – 8.5 at 25 deg. C

Insoluble matter:			0.005 % maximum

Chloride (Cl):			0.001% maximum

Phosphate (PO4):			0.002% maximum

Sulfate (SO4)	:			0.005 % maximum

Ammonium (NH4):			0.002% maximum

Heavy metals (Pb):			5 ppm maximum

Iron (Fe):				0.001% maximum

Calcium (Ca):			0.005 % maximum

Effective: 10/20/15