Characteristics of zinc oxide
Previously, the zinc oxide used as white pigment should be called white zinc or zinc flower (a fine powder after condensation of zinc vapor page). In normal conditions zinc oxide fine white powder, when heated above 3000C, it turns yellow (after cooling, the white back)
Absorb ultraviolet light and 366nm cobuoc smaller waves. When fed into the metal crystal themot I chemotherapy or chemotherapy III, it becomes a semiconductor.
Some constants:
Molecular weight: 81.38 g / mol
Density: 5.65 to 5.68 g/cm3
The melting temperature: 19750C
Thermal conductivity: 25.2 W / m.do
Lattice: Network ion
Crystal structure: Coordinator (coordination number: 4)
Mohs Hardness: 4 to 4.5
\ Delta H ^ 0_ {tt}: -348.28 kJ / mol
\ Delta S ^ 0: 43.64 J / mol.do
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