... foods such sa crisp cake,biscuit etc. Ammonium Bicarbonate food grade,mainly as sponging agent use for baking foods such sa ... midbody,plastics processing,electronic element ect.Specifications:Ammonium Bicarbonate food grade is a white powder,crystal,specific gravity is 1.586 ... .008As wt% max0.0002Heavy metals Pb wt% max0.0005 Food Additive Ammonium Bicarbonate