Ferrate Of Baryta


Produced by adding aqueous ferrate of potash to an excess of dilute

solutions of baryta salts, has been described as carmine-coloured and

permanent. We have not found it to be so--an experience which has

evidently not been confined to ourselves; and we cannot help thinking

that this is one of those errors which get copied from one chemical work

into another, to the special confusion of students. It is but fair,

however, to add that in Mr. Watts' Dictionary of Chemistry, the latest

and best work of the kind, this ferrate is said to become "brick-red

after washing and drying at 100 deg. C.," and to be only "tolerably stable."