Zinc Oxide for Working Chemical Grade

Chemical Reagent: Zinc Oxide (ZnO)
Zinc oxide is a fundamental inorganic compound widely used across various scientific, industrial, and commercial fields. As a chemical reagent, it is valued for its unique combination of chemical, physical, and electrical properties.

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Inspection items	《HG/T2890-2011》		《GB1260-2008》	Measured values
Inspection items	Analytical pure	Chemically pure	Working chenical-Zinc oxide	Measured values
(Zn0)w/%	≥99.0	≥99.0	99.95-100.05	99.9
Clarity experiment/number	≤3	≤5	≤2	≤3
Dilute sulfuric acid insolublew/%	≤0.01	≤0.02	——	≤0.01
Free base	qualified	qualified	qualified
chloride(Cl)w/%	≤0.001	≤0.005	≤0.001	≤0.001
Sulfur compounds (in SO₄)w/%	≤0.01	≤0.02	≤0.005	≤0.01
NO₄w/%	≤0.003	≤0.005	≤0.003	≤0.002
(As)w/%	≤0.00005	≤0.0002	——	≤0.00005
(Na)w/%	≤0.05	≤0.10	——	≤0.0025
(Mg)w/%	≤0.005	≤0.01	≤0.002	≤0.0005
( K ) w / %	≤0.01	0.02	——	≤0.0005
(Ca)w/%	0.005	≤0.01	≤0.005	≤0.0005
(Mn)w/%	≤0.0005	≤0.001	——	≤0.0003
(Fe)w/%	≤0.0005	≤0.0025	≤0.0005	≤0.0005
(Pb)w/%	≤0.005	≤0.05	≤0.003	≤0.0020
Reduced potassium permanganate (in terms of O)w/%	≤0.002	≤0.004	≤0.0016	≤0.0015