AZORESORUFIN

n. A?z"o-re?z-o-ru”'fin. Syn.: diazoresorufin [Weselksky]. A substance, CaH,eN30; = CoH, N — C,(OH)H, — O — H,(OH)C, — NCQCyH,, formed by the action of sulphuric acid on azo resorcin; an amorphous reddish-brown pow- O, no; 02, not; 03, whole; Th, thin; Th2, the; U, like 00 in too; U?, blue; U4, lull; U4, full; U5, urn; US, like à (German). 69 der or, when deposited from a solution in hydrochloric acid, pomegranate-colored prismatic erystais. It produces with aikalies a cinnabar-red color, and is one of the most sensitive reagents to alkalies known. It is insoluble in water and in ether, soluble with difficulty in alcohol, and readily soluble in hydrochloric acid. [H. Brunner, C. ‘timer, * Ber. d. dtsch. chem. Gesellsch.,” 1881, p. 1847 (B); B, 3.]