CAS: 6131-90-4 Molecular Formula: CH3COONa · 3H2O Molecular Weight: 136.08 g/mol Synonym(s): Acetic acid sodium salt trihydrate Test Specification Description White to colorless crystalline powder Assay 99 - 101% pH of a 5% Soln. at 25 Deg. C 7.5 - 9.2 Substances Reducing Permanganate To pass test Insoluble Matter 0.005% max. Chloride (Cl) 0.001% max. Phosphate (PO4) 5 ppm max. Sulfate (SO4) 0.002% max. Heavy Metals (as Pb) 5 ppm max. Iron (Fe) 5 ppm max. Calcium (Ca) 0.005% max. Magnesium (Mg) 0.002% max. Potassium (K) 0.005% max.