Appearance：White crystal
Content: ≥99.5%
Water: ≤0.1%
Copper（Cu²⁺）500ppb ； Iron（Fe²⁺）500ppb ; Nickel（Ni²⁺）500ppb;
potassium（K⁺）500ppb; sodium（Na⁺）500ppb ; calcium（Ca²⁺）500PPb ;
chrome（Cr³⁺）500ppb Packing: 25KG Drum lined with plastic bag