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tameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic.

acid), homologous with terebic acid, and obtained as a white crystalline substance by the oxidation of oil of turpentine with chromic acid.

o, or designating, a tribasic acid, C6H3.(CO2)3, of the aromatic series, obtained, by the oxidation of mesitylene, as a white crystalline substance. [Written also trimesic.]

ric; resembling, or obtained from, turmeric; specif., designating an acid obtained by the oxidation of turmerol. Turmeric paper (Chem.), paper impregnated with turmeric and used as a test for alkaline substances, by which it is changed from yellow to brown. -- Turmeric root. (Bot.) (a) Bloodroot. (b) Orangeroot.…

rythrin, etc., present in the urine together with indican, a colorless substance which by oxidation is convertible into colored bodies.

, occasionally found in the urine in degeneration of the kidneys. It is readily formed by oxidation or decomposition of indican.

ting, an acid, C5H8N4O6, which is obtained, as a white crystalline substance, by the slow oxidation of uric acid in alkaline solution.

Indigo red, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin.

nating, an acid, CH3C6H3(CO2H)2, obtained as a white crystalline substance by the partial oxidation of mesitylene; -- called also mesitic acid.

americ variety which turns the plane of polarization to the right, although formed by the oxidation of a levorotatory amyl alcohol.

ted from vanilla pods, and is also obtained by the decomposition of coniferin, and by the oxidation of eugenol.

rom molten zinc in a separate receptacle, using hydrogen or other reducing gas to prevent oxidation.

reservative, and obtained by the spontaneous (acetous) fermentation, or by the artificial oxidation, of wine, cider, beer, or the like.

ene; specifically, designating any one of several metameric acids produced by the partial oxidation of mesitylene and pseudo-cumene.

Any one of a group of quinone compounds obtained respectively by the oxidation of certain xylidine compounds. In general they are yellow crystalline substances.