| Zirconium Orthoarsenate, Zr3(AsO4)4.5H2O, has been obtained as a voluminous white precipitate by adding sodium monohydrogen orthoarsenate to a solution of zirconyl fluoride in hydrochloric acid. Zirconium monohydrogen orthoarsenate, Zr(HAsO4)2, appears to be formed slowly by adsorption of arsenic acid by zirconium dioxide. |
| Zirconyl Pyroarsenate, (ZrO)2As2O7.nH2O, is obtained as a white precipitate when sodium monohydrogen orthoarsenate is added to a solution of zirconium sulphate. When dried at 110° C. the monohydrate, (ZrO)2As2O7.H2O, remains. It is insoluble in water, but readily dissolves in hydrochloric acid. |