This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1858 Excerpt: ...together with a small quantity of the other substance, is dissolved. In order to obtain the cyanuric acid, the aqueous solution is evaporated to dryness, and the residue extracted with alcohol, when carbanilide is dissolved, and the acid remains in a state of purity. The properties of cyanuric acid are so marked, that ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1858 Excerpt: ...together with a small quantity of the other substance, is dissolved. In order to obtain the cyanuric acid, the aqueous solution is evaporated to dryness, and the residue extracted with alcohol, when carbanilide is dissolved, and the acid remains in a state of purity. The properties of cyanuric acid are so marked, that I have omitted to analyse the product; its comportment with solvents, and emitting also the well-known odour of cyanic acid when heated, appearing quite sufficient to obviate all chance of mistake. " The production of carbanilide, of ammonia, and of cyanuric acid in this reaction, admits of an easy explanation, if we recollect that carbamide is actually a submultiple of urea, which, as is well known, when submitted to dry distillation, is converted into ammonia and cyanuric acid. " Two equivalents of the compound contain the elements of two equivalents of carbanilide and one of urea: 4 2C,4H8N!0- = 2C,"HBNO + CN'H'O', Carbamide-Carbanilide. Urea: Carbanilide. and the following equation exhibits the final results of the destruction of carbamide-carbanilide by heat 5: 6C"H, N,0' = 3NH3 + eC'H'NO + IP.CIW. Carbamide-Carbanilide. Cyanuric acid. Carbanilide. " The substance which I have described in the preceding pages claims some interest, as the first conjugated amide which was discovered, and as the first member of a class of compounds which has been enriched in so remarkable a manner by the investigations of MM. Gerhardt and Laurent."--Quarterly Journal oftlie Chemical Society, 1848, ii., 42. Remarks on the above statement.--1 Anilo-urea is a neutral salt and not a base; and it has no replaceable hydrogen, except what constitutes the ammonium. Why should it have " a remnant of basic properties?" 2. Th...
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