a. Chem. [f. UROXAN-THIN + -IC 1 b.] Of an acid: Obtained by oxidation of uric acid in alkaline solution.
1854. R. D. Thomson, Cycl. Chem., 512/1. Uroxanic Acid…; obtained by allowing a solution of uric acid in excess of potash to stand, when this acid is deposited along with urate of potash.
1868. Watts’ Dict. Chem., V. 969. A yellowish hygroscopic substance is left,… having the composition of uroxanic anhydride, C5N4H8O5 (which is also that of dialurate of ammonium).
1884. Roscoe & Schorlemmer, Treat. Chem., III. II. 297. Uroxanic Acid, C5H8N4O6, is formed when a solution of uric acid in caustic potash is exposed for some months to the action of air free from carbon dioxide.
