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Uric.

ed by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

us substance (C6H4N4O5) obtained by the reduction of parabanic acid; -- called also leucoturic acid.

A salt of oxaluric acid.

r grade, as an -ous compound to an -ic compound; as, to oxidize mercurous chloride to mercuric chloride.

wn in the free state, but obtained, in combination with its salts, by a slow oxidation of uric acid, to which it is related.

An acid containing oxygen, as chloric acid or sulphuric acid; - - contrasted with the hydracids, which contain no oxygen, as hydrochloric acid. See Acid, and Hydroxy-.

Imitation parchment, made by soaking unsized paper in dilute sulphuric acid.

Pertaining to, or designating, a nitrogenous acid which is obtained by the oxidation of uric acid, as a white crystalline substance (C3N2H2O3); -- also called oxalyl urea.

c modification of cyanogen, obtained as a brown or black amorphous residue by heating mercuric cyanide.

To convert to a parchmentlike substance, esp. by sulphuric acid.

The auricle of the ear; also, the fimbriated extremity of the Fallopian tube.

A purple powder precipitated when a sulphuric solution of indigo is diluted with water.

A bath of dilute sulphuric or nitric acid, etc., to remove burnt sand, scale rust, etc., from the surface of castings, or other articles of metal, or to brighten them or improve their color.

The auricle of the ear. See Ear.

its resistance to strong chemical reagents. It is used for crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Formerly called platina. Platinum black (Chem.), a soft, dull black powder, consisting of finel…

gen atoms capable of being replaced by basic radicals; -- said of certain acids; as, sulphuric acid is polybasic.

hts; -- often used with with; thus, cyanic acid (CNOH), fulminic acid (C2N2O2H2), and cyanuric acid (C3N3O3H3), are polymeric with each other.

rough the solution, or may float at or near the surface. Red precipitate (Old. Chem), mercuric oxide (HgO) a heavy red crystalline powder obtained by heating mercuric nitrate, or by heating mercury in the air. Prepared in the latter manner, it was the precipitate per se of the alchemists. -- White precipitate (Old Che…

- Leblanc's process (Chem.), the process of manufacturing soda by treating salt with sulphuric acid, reducing the sodium sulphate so formed to sodium sulphide by roasting with charcoal, and converting the sodium sulphide to sodium carbonate by roasting with lime. -- Mesne process. See under Mesne. -- Process milling,…