Zinc Oxide 99% active free sample
Zinc Oxide / ZnO Properties
| Molecular formula |
ZnO |
| Molar mass |
81.408 g/mol |
| Appearance |
White solid |
| Odor |
odorless |
| Density |
5.606 g/cm3 |
| Melting point |
1975 °C (decomposes)[1] |
| Boiling point |
2360 °C |
| Solubility in water |
0.16 mg/100 mL (30 °C) |
| Band gap |
3.3 eV (direct) |
| Refractive index (nD) |
2.0041 |
Zinc Oxide / ZnO Specification
| Item/Parameter |
Standard |
| Zinc Oxide % ≥ |
ZnO 99.5% |
ZnO 99.7% |
ZnO 99.8% |
ZnO 99.9% |
| Metallic Zinc (in accordance with Zn) % |
None |
None |
None |
None |
| Lead oxide (PbO)%≤ |
0.05 |
0.037 |
0.001 |
0.001 |
| Cadmium oxide (CdO) % ≤ |
-- |
-- |
0.0005 |
0.0005 |
| Cupric oxide (CuO) % ≤ |
0.0004 |
0.0002 |
0.0002 |
0.0002 |
| As ≤ |
-- |
-- |
0.0005 |
0.0005 |
| Manganese (Mn) % ≤ |
0.0001 |
0.0001 |
-- |
-- |
| Ferro Oxide (FeO) % ≤ |
-- |
0.001 |
-- |
-- |
| Muriatic Acid Insoluble Substance % ≤ |
0.008 |
0.006 |
0.004 |
0.004 |
| Loss On Ignition % ≤ |
0.2 |
0.2 |
-- |
-- |
| Water Insoluble Substance % ≤ |
0.2 |
0.1 |
-- |
-- |
| Volatile 105°C % ≤ |
0.4 |
0.3 |
0.3 |
0.3 |
| Sieve Residue (45um mesh ) % ≤ |
0.1 |
0.1 |
0.1 |
0.1 |
| Surface Area % ≥ |
45 |
50 |
60 |
60 |
| Oil Absorption g/100g ≤ |
-- |
14 |
-- |
-- |
| Reducing Power (compared with standard sample) % ≥ |
-- |
100 |
-- |
-- |
Audited Supplier 
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