Zinc Oxide
Zinc oxide is an inorganic compound with the formula ZnO. It is a white powder that is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants,paints, sunscreens, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, semi conductors, and first-aid tapes. Although it occurs naturally as the mineral zincite, most zinc oxide is produced synthetically.
Application
ZnO is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers, plastics, ceramics, glass, cement, lubricants,[5] paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes
| Chemical formula | ZnO |
|---|---|
| Molar mass | 81.406 g/mol |
| Appearance | White solid |
| Odor | Odorless |
| Density | 5.6 g/cm3 |
| Melting point | 1,974 °C (3,585 °F; 2,247 K) (decomposes) |
| Boiling Point | 2,360 °C (4,280 °F; 2,630 K) (decomposes) |
| Solubility in water | 0.0004% (17.8°C) |
| Band Gap | 3.2 eV (direct) |
| Electron mobility | 180 cm2/(V·s) |
| Magnetic susceptibility (χ) | −27.2·10−6 cm3/mol |
| Thermal conductivity | 0.6 W/(cm·K) |
| Refractive index (nD) | n1=2.013, n2=2.029 |
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