Spece: Sodium Bicarbonate: 99% min Sustance insoluable: 0.05% max Chloride: 0.5% max Sulfate: 0.05% max Fe content: 0.005% max PH value: 8.6 max Heavy metal(Pb): 0.0005% max As content: 0.0001% max Packing: By 50kg WPP/PE bag HS Code: 28363000 Productivity: 5000mt/month