Molecular formula: ZnO
·Molecular weight: 81.37;
· Basic Characteristics: Hexagonal crystals or a white powder, no smack; Melting point: 1975 ℃; Solubility: do not dissolve in water, ethanol, dissolved in acid, sodium hydroxide solution, ammonium chloride; density: the relative density (water = 1) 5.606, stability: stability.
·Specifications:

product index	Zinc Oxide99%	Zinc Oxide 99.5%	Zinc Oxide 99.7%
Content(ZnO) ≥	99%	99.5%	99.7%
MnO ≤	0.001%	0.0005%	0.0004%
PbO ≤	0.15%	0.05%	0.037%
CuO ≤	0.001%	0.0005%	0.0004%
Heat Loss ≤	0.3%	0.3%	0.3%
Hcl Insoluble Matter ≤	0.01%	0.01%	0.01%
Water Soluble Matter ≤	0.1%	0.1%	0.1%
45um Sieve Residue ≤	0.15%	0.15%	0.15%