1.purity:98% min 2.Mainly used in feedstuff additives construction material and leather ... Meet the requirementsPurity, % 98minTotal calcium, % 30.2Loss on drying,% 0.50maxInsoluble-matter %0.15maxHeavy metals, ug/g20max Chloride,%0.02maxAs,ug/g20maxPH ... , and ventilated placePACKAGING25kg per bag or packed as your required calcium formate