Specification appearance white crystalline powder total alkalinity (as NaHCO3) 99.0%-100.5% loss on drying 0.2%max pH value (10g/L solution) 8.5max ammonium salt pass the test clarity pass the test chloride (as Cl) 0.4%max whiteness 85min As 0.0001%max heavy metal (as Pb) 0.0005%max Packaging in 25kg PP/PE bags without pallet