Molecular formula:ZnCO₃2Zn(OH)₂·H₂O
Molecular weight:342.14
Physical and chemical properties:White subtle amorphous powder,odorless and tasteless.Density:4.39g/ml(25℃).Solubility:Insoluble in water and alcohol,slightly soluble in ammonia.can dissolve in diluye acid and sodium hydroxide.Stable under atmospheric and atmospheric pressure.
Applications and Usages:Used in the production of lightweight astringents,latex products,skin protectors,rayon,analytical reagents,desulfurizer,pharmaceutical industry.As feed additive,usde in feed additive,used in feed for zinc supplementation.
Product Specification:HG/T2523-2016
| Item | StandardⅠ | standardⅡ | standardⅢ |
| Basic zinc carbonate(based on Zn)(based on dry base),w%≥ | 57.5 | 57.0 | 56.5 |
| Loss of combustion,w%≤ | 25.0~28.0 | 25.0~30.0 | 25.0~32.0 |
| Moisture,w%≤ | 2.5 | 3.5 | 4.0 |
| Manganese(Mn),w%≤ | 0.010 | 0.015 | 0.020 |
| Cupric(CU),w%≥ | 0.010 | 0.015 | 0.020 |
| Cadmium(Cd),w%≤ | 0.010 | 0.020 | 0.030 |
| Plumbum(Pb),w%≤ | 0.010 | 0.015 | 0.020 |
| Sulphate(SO₄)≤ | 0.60 | 0.80 | 1.00 |
| Passing rate(through75μm mesh sieve),w%≥ | 95.0 | 94.0 | 93.0 |
Zinc Carbonate Basic photo:
