The anhydrous orthoborate, Cd3(BO3)2, has been prepared by fusing potassium hydrogen fluoride, boron trioxide, and cadmium oxide in molecular proportions. On treating the cooled melt with water prismatic crystals of 3CdO.B2O3 are obtained. They have a marked effect on polarised light, dissolve readily in acids, and are not acted upon by water.
A metaborate, CdO.B2O3, has been obtained by melting cadmium oxide and boron trioxide together.
Various compounds of the general formula xCdO.yB2O3.zH2O have been prepared by precipitating a solution of a cadmium salt with borax or treating cadmium carbonate with boric acid. |