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Molecular Formula : ZnO
Mlolecular Weight :81.39
PROPERTIES:
White hexaplanar crystal or powder , odorless , non-toxic and fine , relative density is 5.606 , melting piont is 1975℃ , soluble in acid , NaOH , NH4CL , insoluble in water , ethanol or ammonia,
turn yellowish under high temperature and trun back to white after colling.
APPLICATIONS:
Zinc Oxide can well assist enamels' meltings , and can lower the glazing's expanding quotiety, and
improve the stability in high temperature, meanwhile ,it can make the glazing more polishing and
more flexible, in a word ,improving the luster while enlarging the melting extension. Mainly used
in making cobalt glazing (blue), and ceramics pigments,etc,also, ZnO is widely used in the industries of rubber ,pharmacy,electronics,etc..
SPECIFICATIONS:
|
ITEMS |
GRADES |
|
ZnO（dry base）%≥ |
99.7 |
99.5 |
99 |
98 |
95 |
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Metals（Zn）%≤ |
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|
0.02 |
0.025 |
0.03 |
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PbO（Pb）%≤ |
0.037 |
0.05 |
0.06 |
0.07 |
0.07 |
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Fe2O3（Fe）%≤ |
0.0001 |
0.0001 |
0.0004 |
0.0004 |
0.0005 |
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Insoluble in HCL %≤ |
0.006 |
0.008 |
0.02 |
0.02 |
0.025 |
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Loss on ignition %≤ |
0.2 |
0.2 |
0.2 |
0.2 |
0.35 |
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Volatile at 105℃ %≤ |
0.3 |
0.4 |
0.5 |
0.5 |
0.08 |
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