sodium bicarbonate : Packing: 25/50 /1000 kg/bag (inner-plastic-outer-woven bag) Index items IndexTotal alkali content (NaHCO3 )mass fraction / % 99.0 100.5 drying loss mass fraction / %≤ 0.20PH Scale of aqueous solution (10g/L) ≤ 8.5arsenic (As) mass fraction / %≤ 0.0001heavy metal ( with Pb) mass fraction / %≤ 0.0005ammonium salt content through experimentclarity degree through experimentchloride (with cl) mass fraction / % ≤ 0.40whiteness ≥ 85