Index item HG2920-2000
(1)Content,≥% :98.0
(2)Heavy metal(in lead),≤% :0.001
(3)Fluoride,≤% :0.005
(4)Water insolubles,≤%:0.2
(5)Arsenic, ≤% :0.0003
(6)Loss on drying,≤% :anhydride 5.0 dihydrate 18.0-22.0
(7)Packing:The net weight of each bag is 25kg