Zinc Carbonate
Basic Zinc Carbonate (used in oil field)
Molecular Formula: ZnCO3.2Zn(OH)2.H2O
Proportion: 4.42-4.45
Characters: amorphous white powder, inodorous, tasteless.
Proportion: 4.42-4.45. Indissoluble in water & alcohol, slightly soluble in ammonia, soluble in diluted acid and sodium hydroxide.
Application: Used as corrosion inhibitor & desulphurization agent in oil exploitation, activator and desulphurization agent in chemical fertilizer production; also widely used in paint and other chemical industries.
Chemical industry Standard of People’s Republic of China HG/T2523-93
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ITEMS
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INDEX
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High-Class
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First-Class
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Qualified
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Main component (Zn) (%) ≥
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57.5
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57.0
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56.5
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burn loss
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25.0-28.0
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25.0-30.0
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25.0-32.0
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Heavy metal (Pb) ≤ (%)
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0.04
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0.05
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0.05
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moisture ≤
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2.5
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3.5
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5.0
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SO4 (%) ≤
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0.60
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0.80
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-
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Finess degree (by 74um sift net) ≥
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95.0
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94.0
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93.0
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Cd content (%) ≤
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0.10
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