Basic Zinc Carbonate

It can be used as the raw material of light convergence and rubber products. It can also be used in compounding calamine and as

Molecular Formula:ZnCO3.2Zn(OH)2.H2O Molecular Weight: 342.15Property: White, tiny and shapeless powder, odorless and tasteless. Its specific weight is 4.42-4.45, insoluble in water and alcohol, slightly soluble in ammonia, soluble in dilute acid and sodium hydroxide.Quality Standard: Chemical Industry Standard of People's Republic of China HG/T 2523-93

Item	Index
	High-class Product	First-class Product	Qualified Product
Main Content (Zn ) (Dry Basis)≥	57.5	57.0	56.5
Ignition Loss	25.0-28.0	25.0-30.0	25.0-32.0
Content of Heavy Metal ( of pb)≤	0.04	0.05	0.05
Water Content≤	2.5	3.5	5.0
Content of Sulphate (SO4)≤	0.60	0.80
Fineness Passing Through 75μm Sieve ≥	95.0	94.0	93.0
Content of Cadmium (Cd)≤	0.10

Basic Zinc Carbonate