Uranyl Aminophosphates

By saturating an aqueous solution of phosphoric acid with an amine, and adding uranyl acetate solution, drop by drop, double phosphates of the type B^xHUO₂PO₄ have been prepared. The following have been obtained: CH₃NH₂.HUO₂PO₄; C₂H₅NH₂.HUO₂PO₄; and (CH₃)₃N.HUO₂PO₄. The compounds are precipitated in a pale yellow colloidal condition, and when dried in vacuo become horny.