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Zinc Oxide
Zinc Oxide

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Zinc Oxide
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Product Name:Zinc Oxide

High Quality

Earliest Shipment

Competitive price

Professional Service



Zinc oxide is an inorganic compound with the formula ZnO. It is a white powder that is insoluble in water. The powder is widely used as an additive into numerous materials and products including plastics, ceramics, glass, cement, rubber (e.g., car tires), lubricants,[2] paints, ointments, adhesives, sealants, pigments, foods (source of Zn nutrient), batteries, ferrites, fire retardants, first aid tapes, etc. ZnO is present in the Earth's crust as the mineral zincite, however, most ZnO used commercially is synthetic.

In materials science, ZnO is a wide-bandgap semiconductor of the II-VI semiconductor group (since zinc and oxygen belong to the 2nd and 6th groups of the periodic table, respectively). The native doping of the semiconductor (due to oxygen vacancies) is n-type. This semiconductor has several favorable properties: good transparency, high electron mobility, wide bandgap, strong room-temperature luminescence, etc. Those properties are already used in emerging applications for transparent electrodes in liquid crystal displays and in energy-saving or heat-protecting windows, and electronic applications of ZnO as thin-film transistors and light-emitting diodes are forthcoming as of 2009.


Zinc oxideIdentifiersPropertiesThermochemistryHazardsRelated compounds
Other names[hide]Zinc white
CAS number1314-13-2 Y
ChemSpider14122 N
EC number215-222-5
RTECS numberZH4810000
[show]InChI=1S/O.Zn N
Molecular formulaZnO
Molar mass81.408 g/mol
AppearanceWhite solid
Density5.606 g/cm3
Melting point

1975 °C (decomposes)[1]

Boiling point

2360 °C

Solubility in water0.16 mg/100 mL (30 °C)
Band gap3.3 eV (direct)
Refractive index (nD)2.0041
Std enthalpy of
formation ΔfHo298
-348.0 kJ/mol
Standard molar
entropy So298
43.9 J·K−1mol−1
EU Index030-013-00-7
EU classificationDangerous for the environment (N)
S-phrasesS60, S61
NFPA 704120W
Flash point1436 °C
Other anionsZinc sulfide
Zinc selenide
Zinc telluride
Other cationsCadmium oxide
Mercury(II) oxide

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