Description: Zinc Citrate /Zinc Citrate Dihydrate M.F: Zn3(C6H5O7)2.2H2O M.W.: 610.40 CAS:546-46-3 Grade: Food , Pharmaceutical Appearance: White powder, slight soluble in water but soluble in Application: as food additive and nutrient supplement in food,drink,dairy products,infant formula, toothpaste and dietary supplement. Packing : 25kg in a kraft bag with inner PE bag Shelf life: 2 yrs ITEM USP40 GB Assay (Zn) % 31.3 31.3 Chloride %0.05 0.05 Sulfate % 0.05 0.05 Arsenic ppm 3 2 Cadmium ppm 5 Lead ppm 10 5 Iron ppm / 50 Limit of acid-insoluble substances % 0.2 0.1 Loss on drying % 1.0(105 2hrs) 1.0(105-2hrs)