Atomistry » Barium » Chemical Properties » Barium Persulphate
Atomistry »
  Barium »
    Chemical Properties »
      Barium Persulphate »

Barium Persulphate, BaS2O8

Barium Persulphate, BaS2O8, may be obtained in solution by the action of persulphuric acid on barium hydroxide. It can be prepared by grinding solid barium hydroxide into a paste with a saturated aqueous solution of ammonium persulphate, driving off most of the ammonia by a current of air, and the rest in vacuo over sulphuric acid, and removing excess of baryta with carbon dioxide. On evaporating the filtrate in vacuo, small, transparent, non-deliquescent, monoclinic prisms of composition BaS2O8.4H2O are obtained.

At 0° C. 100 parts of water dissolve 52.2 parts of crystallised salt. The solubility increases rapidly with temperature, but supersaturated solutions are easily obtained. The solution gradually decomposes and precipitates barium sulphate, especially if heated. The solid salt is best preserved in a moist atmosphere, but heat at once decomposes it.

By treatment with absolute alcohol the monohydrate, BaS2O8.H2O, is formed. It cannot be further dehydrated without decomposition. The salt has the oxidising properties of the persulphates.

Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy