Ammonium bicarbonate, a natural chemical, has a faint ammonia smell because it slowly decomposes to ammonia, carbon dioxide Ammonium bicarbonate food grade Total alkali (as NH4HCO3):99.2%min, Cl:0.003%max, SO4:0.007%max, Ash:0.008%max, As:0.0002%max, Heavy metal (as Pb):0.0005%maxPacking:50kgs plastic woven bags, 25mts/20'fcl Ammonium bicarbonate