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Ceramics and Glass

?Zinc oxide is used to manufacture glazes and acts as an opacifier or whitener. Its low coefficient of thermal expansion improves resistance to thermal and mechanical shock, most notably in glass.
?In the frit industry, zinc oxide enhances color and clarity.
?Zinc oxide's high refractive index makes it an excellent raw.
?material for manufacturing optical glass.
?The varistor and ferrite industries use zinc oxide to manufacture ceramic.
?components which protect against lightning and voltage surges.

 
Standard:
 Item Index
 Model Top garde First grade
 Zinc oxide(as Zno)%,≥ 99.7 99.5
 Metals (as Zn)%,≤ No No
 Lead oxide(as Pb)%,≤ 0.037 0.05
 Ferric(as Fe)%,≤ 0.01 0.03
 Insoluble matter in HCI%,≤ 0.02 0.05
 Loss on ignition%≤ 0.2 0.2
 Volatile matter on 105℃%,≤ 0.3 0.3

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