Atomistry » Zinc » Chemical Properties » Zinc Selenites
Atomistry »
  Zinc »
    Chemical Properties »
      Zinc Selenites »

Zinc Selenites

The biselenite, ZnO.2SeO2.3H2O, has been prepared in colourless transparent crystals by adding 5-6 grm. zinc carbonate, in successive portions, to a solution containing 20 grm. selenium dioxide in 30 grm. water. The deposit becomes crystalline after decanting off the syrupy liquid.

The anhydrous neutral selenite, ZnSeO3, is obtained by heating the mother-liquor from the preparation of the biselenite in a sealed tube at 200° C. It separates as prismatic orthorhombic crystals that are insoluble in water, soluble in acids, and calcine in air to zinc oxide. The biselenite also becomes zinc oxide when heated in air, dissolves in cold water, and is converted by hot water into white pulverulent ZnSeO3.

The dihydrate, ZnSeO3.2H2O, and the monohydrate have also been prepared.

Orange crystals, resembling potassium chromate, of the tetraselenite, ZnSeO3.3H2SeO3, were obtained by dissolving zinc in a concentrated solution of selenious acid. They are stable in air, very soluble in water, and become white and opaque at 40° C.

Last articles

Zn in 7M6U
Zn in 7NNG
Zn in 7NEE
Zn in 7NEU
Zn in 7M3K
Zn in 7KWD
Zn in 7KYH
Zn in 7KNG
Zn in 7KY2
Zn in 7KYF
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy