zinc carbonate MF:ZnCO3.2Zn(OH)2.H2O White, tiny and shapeless powder odorless, tasteless; relative density: 4.42~4.4 zinc carbonateQuality standard ... )≤0.040.050.05Water Content≤2.53.55.0Content of Sulphate (SO4)≤0.600.80——Fineness Passing Through 75μm Sieve ... applied widely in the rubber product, paint, medicin. High purity Zinc Carbonate oil industry grade