Atomistry » Calcium » Chemical Properties » Calcium Chromite
Atomistry »
  Calcium »
    Chemical Properties »
      Calcium Chromite »

Calcium Chromite, CaCrO4 or CaO.Cr2O3

Calcium Chromite, CaCr2O4 or CaO.Cr2O3, may be obtained as an olive-green crystalline powder by heating together potassium dichromate and calcium chloride, and extracting with concentrated hydrochloric acid. On precipitating a solution of chrome alum and a calcium salt with potassium hydroxide in excess, a green insoluble compound, corresponding in composition with the formula 2CaO.Cr2O3.xH2O, is formed. It is less stable than the former compound, being readily oxidised to chromate by heating in air. By heating chromium sesquioxide and calcium oxide together in the electric furnace, hard green crystalline plates of density 4.8 and composition 4CaO.Cr2O3 are formed. They are decomposed by water.

Last articles

Zn in 8WB0
Zn in 8WAX
Zn in 8WAU
Zn in 8WAZ
Zn in 8WAY
Zn in 8WAV
Zn in 8WAW
Zn in 8WAT
Zn in 8W7M
Zn in 8WD3
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy