Sodium Bicarbonate Food Grade Content 99% Min. As 0.0001% Max. Heavy metal 0.0005% Max. Loss on dring 0.2% Max. PH value 8.6Max. Sodium Bicarbonate Tech Grade Contect 99% Min Chloride 0.4% Max Arsenic 0.0001% Max Heavy Metal( Pb) 0.0005% Max Loss on Drying 0.20% Max PH Value 8.6Max Appearance: White crystal powder Packing: In 25kg plastic woven bag with plastic liner inside Usage: Used as food fermentation, detergent ingredient, carbon doxide foamer, pharmacy, leather, ore milling and metallurgy, detergent for wool, extinguisher and metal heat-treating, fiber and rubber industry, etc