Thursday, November 27, 2008

ZINC OXIDE

Chemical name: Zinc Oxide.

Molecular Formula: Zno


Our company is a factory that has various Zinc Oxide. Has calcined method Zinc Oxide, indirect method Zinc Oxide, direct method Zinc Oxide and active Zinc Oxide.
Calcined Method Zinc Oxide
Appearance: Slightly yellow or white powder
Calcined method Zinc Oxide is divided industry grade and feed grade. Industry Grade Zinc Oxide has merits as follows: impurity content is lower, specific surface area and stacking density (bulk) is large. It is used in ceramics, rubber industry etc.
Its standards of content have 99.5%, 99%, 98%, yield 5000MT/Y. Feed grade Zinc Oxide's content higher and its content of lead, cadmium, arsenic are lower. Feed Grade Zinc Oxide's content has 99% and 98%, yield 4000MT/Y.
Standard: Up to Q/320201NAS005-1997
Name Index
Type1 Type2 Feeding
Grade
High Grade First Grade Qualified
Appearance Yellowish-white or slightly yellow powder
Zinc Oxide (on dry basis) ≥% 99.7 99.5 99.0 98.0 95.0
PbO(as per Pb) ≤% 0.037 0.05 0.15 - 0.003
CdO(as per Cd) ≤% 0.005 0.02 0.04 - -
CuO(as per Cu) ≤% 0.0002 0.006 - - -
Oxide of Manganese (as per Mn) ≤% 0.0003 0.0005 - - -
Arsenic ≤% - - - - 0.001
Metallic Matters (as per Zn) ≤% Naught Naught 0.008 - -
Ignition on Decrement ≤% 0.2 0.4 0.6 - -
Hydrochloric acid insolubles ≤% 0.03 0.05 0.08 - -
Water solubles ≤% 0.1 0.4 0.7 0.7 -
Moisture ≤% 0.3 0.4 0.4 0.4 -
Residue on sieve 45um (wet sieving)≤% 0.1 0.28 0.35 0.5 -
Residue on sieve 154um (dry sieving)≤% - - - - 5

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