An image of a coin was obtained by placing it between uranic salts and a photographic plate.
These, in contrast with the uranic salts, are non-phosphorescent.
What percentage of uranium oxide was contained in the uranic acetate?
Uranic salts, on the other hand, are easily reduced by sulphuretted hydrogen, stannous chloride or zinc.
It is not necessary to filter off a portion of the assay before testing with the "ferrocyanide," since the precipitate (uranic arsenate) has no effect.
Uranous salts are converted into uranic by boiling with nitric acid or other oxidising agents.
Next boil it along with cupric oxide, which precipitates only the uranic and ferric oxides.
Defn: Pertaining to, or containing, uranium; designating those compounds in which uranium has a lower valence as contrasted with the uranic compounds.
Messrs Renard Brothers include in their patent the ebullition of aniline with stannous, stannic, mercurous, and mercuric sulphates, with ferric and uranic nitrates and nitrate of silver, and with stannic and mercuric bromides.
The chief oxides of uranium are the protoxide and the sesquioxide, or uranic oxide.
There remains but one class of uranic photographs to be described, namely, that obtained when we develop with a salt of silver or gold (or platinum?
I have used for the solution of the uranicoxide for this process a variety of acids with very similar results; the sensitiveness of the prepared paper to light varying much, however.
I have succeeded in getting very beautiful impressions by development of the uranicpaper by chloride of gold alone.
Under the luminous agency the uranic nitrate is first reduced, then the uranous oxide acts on the cupric nitrate, forming cupric oxide, which is finally reduced to the metallic state.
In the first process, the paper being charged with the uranic salt and exposed to the solar influence under the negative to be copied, is washed with a solution of the ferridcyanide or red prussiate of potash.
I have got a good black perfectly like that of an engraving, by the nitrate of uranic oxide, developed by ammonio-nitrate of silver (or plain nitrate) and fixed by plain hyposulphite without any coloring bath.
This metal now converts the ferricyanate in the ferro compound, which, by another action, forms both cupric and uranic ferrocyanate.
