... basic carbonateFormula ZrOCO3·nH2OAppearance and general characteridtics White powder, Insoluble in water ,Non-toxic, odorless ,Readily soluble in inorganic acids, solublein carbonate ... , water-proofing agent for building material, ceramics, etc.Specification Zirconium basic carbonate SPEC ITEMZBC-ZBC-ZBC-ZBC-ZrO2 +HfO238-42%38-42 ... %maxPH 7.0min3.5-4.53.5-4.5 zirconium basic carbonate