Zinc oxide,activated,Zinc carbonate,basic,ammonium sulphate,ammonia sulfate-Zhengzhou Yongchang Chemical Co.,Ltd.

Molecular formula:ZnCO₃·2Zn(OH)₂·H₂O
Molecular weight:342.15
Uses:used as light astringent and material of latex, used in calamine, skin care, or used in rayon and catalytic desulfurization agent.

Quality index: company standard

Item	Index
Purity(as Dry zinc), % ≥	57
Moisture, % ≤	2.5
Residue on ignition, %	70-74
Heavy metal(Pd), % ≤	0.05
Fineness(residue on 200mesh sieve), % ≤	6

Activated zinc oxide

Ammonium sulfate

Zinc carbonate