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Nitrate of Urea
This may be prepared as in last receipt from urea; or by strychnine, morphine, &c., and decided to call it benzole. The French, however, adhered to Mitscherlich's name, and continue to call it benzine, causing considerable confusion; as benzole, from coal-tar, is a different liquid saturating the artificial urea (Liebig's prepafrom benzine, obtained from petroleum. (Sce ration) with nitric acid.
No. 1527.) Benzole has a specific gravity of 4325. Stearine. The solid portion of .85, and freezes at 370 Fahr; it dissolves as- fats which is insoluble in cold alcohol. Pure phaltum or pitch rapidly, is volatile at all strained mutton suct is melted in a glass flask temperatures, but less so than benzine. Ben- with 7 or 8 times its weight of ether, and the zole can be converted by nitric acid into nitro- solution allowed to cool; the soft pasty mass benzole, and, by further treatment, into ani- is then transferred to a cloth, and is strongly line. (See No. 2552.) It contains about pressed, as rapidly as possible, to avoid evappressed, as rapidly as possible, to avoid evap- 92.5 per cent. of carbon, and 7.5 per cent. of oration; the solid portion is then dissolved again in ether, and the solution allowed to hydrogen.