Sodium Tartrate Dihydrate, Reagent A.C.S.

Assay:99.0-101.0%
Na2C4H4O6 · 2H2O
Loss on drying at 150°C15.61%-15.71%
pH of a 5% solution:7.0-9.0 at 25 °C
MAXIMUM ALLOWABLE 
Insoluble matter: 0.005%
Chloride (Cl): 5 ppm
Phosphate (PO4): 5 ppm
Sulfate (SO4): 0.005%
Ammonium (NH4): 0.003%
Calcium (Ca): 0.01%
Heavy metals (as Pb): 5 ppm
Iron (Fe): 0.001%
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