1. Molecular formula:C₁₂H₂₂O₁₄Zn; molecular weight: 455.68。
2. Properties: Anhydride or 3 molecular bound water, white or nearly white coarse powder or crystalline powder.
3. Uses：nutritional supplement (zinc and calcium enhancer)
4. Packing: 25kg in bags; 25kg in barrels.
5. Quality standard: Conform to the standard of Chinese, British and American Pharmacopeias.

Quality standard
Index name: GB8820-88
Assay (anhydride) % 97.0-102.0
As ≤3PPM
Cd ≤5PPM
Chloride % ≤0.05
Pb ≤10PPM
Reduction material % ≤1.0
Sulfate % ≤0.05
Moistur content (trihydrate) % ≤11.6