High‑purity zinc oxide is an odorless white powder without mechanical impurities. It is insoluble in water, but soluble in organic solvents including ethanol and ether. It dissolves in dilute acids to generate zinc salts and reacts with strong alkalis to produce zincates, showing typical amphoteric‑oxide behaviour.
Zinc Oxide CAS#1314-13-2
| Melting point | 1975 °C |
| Boiling point | 1949.9°C (estimate) |
| Density | 5.6 |
| Bulk density | 200-700kg/m3 |
| Refractive index | 2.008~2.029 |
| Fp | 27℃ |
| Storage temp | Store at +5°C to +30°C. |
| Solubility | 0.0016g/l insoluble |
| Form | Nanopowder |
| Color | White to pale yellow |
| Specific Gravity | 5.61 |
| PH | 7 (50g/l, H2O, 20℃)(slurry) |
| Odor | Wh. to gray powd. or crystals, odorless, bitter taste |
| Water Solubility | 1.6 mg/L (29 ºC) |
| Crystal Structure | ZnO type |
| crystal system | Six sides |
| Merck | 14,10147 |
| Space group | P63mc |
| Lattice constant | A/nmb/nmc/nmα/oβ/oγ/oV/nm30.324950.324950.5206990901200.0476 |
| Dielectric constant | 40.0（20℃） |
| Exposure limits | ACGIH: TWA 2 mg/m3; STEL 10 mg/m3 OSHA: TWA 5 mg/m3; TWA 15 mg/m3 NIOSH: IDLH 500 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3; Ceiling 15 mg/m3 |
| Stability | Stable. Incompatible with magnesium, strong acids. |
| InChIKey | XLOMVQKBTHCTTD-UHFFFAOYSA-N |
| CAS DataBase Reference | 1314-13-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Zinc oxide(1314-13-2) |
| EPA Substance Registry System | Zinc oxide (1314-13-2) |
