Sodium bicarbonate Pharmaceutical Grade 1). Properties: White crystal powder, easily soluble in water, Water solution is faintly alkali, easily decomposition if heating. 2. )Application: Mainly used for pharmacy. 3. )Formula: NaHCO3 Total Alkalinity content (as NaHCO3)% 99.0MIN PH Value (10g/L solution) 8.6MAX Sulfate(as SO4) % 0.03MAX Arsenic content (as As) % 0.0002MAX Heavy Metal content (as Pb) % 0.0005MAX Chloride content (as Cl) % 0.02MAX Iron content (as Fe) % 0.0015MAX