Sodium Carbonate Monohydrate, Reagent A.C.S.

Assay:≥99.5%
Na2CO3 · H2O
Loss on drying at 150°C:13.0-15.0%
MAXIMUM ALLOWABLE 
Insoluble matter: 0.01%
Chloride (Cl): 0.001%
Phosphate (PO4): 5 ppm
Silica (SiO2): 0.005%
Sulfur compounds (as SO4): 0.004%
Heavy metals (as Pb): 5 ppm
Iron (Fe): 5 ppm
Calcium (Ca): 0.03%
Magnesium (Mg): 0.005%
Potassium (K): 0.005%
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