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. 1920 Excerpt: ...alcohol for 3 hours, and pour into cold water. Phenylthiourethane, C6H6NH.CS.OC2H5, separates out and may be recrystallised from alcohol. Yield, i grams; m. p. 67. 4. Heat a few drops of the mustard oil with yellow mercuric oxide and notice the irritating smell of phenyl carbimide. C H5N: CS + HgO = C6H5N: CO + HgS ...
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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. 1920 Excerpt: ...alcohol for 3 hours, and pour into cold water. Phenylthiourethane, C6H6NH.CS.OC2H5, separates out and may be recrystallised from alcohol. Yield, i grams; m. p. 67. 4. Heat a few drops of the mustard oil with yellow mercuric oxide and notice the irritating smell of phenyl carbimide. C H5N: CS + HgO = C6H5N: CO + HgS Triphenylguanidine.--In order to separate the triphenylguanidine remaining in the flask as hydrochloride after distilling off the phenyl mustard oil, the hot solution must be somewhat concentrated. The colourless salt, which crystallises out on cooling, is filtered and washed with a little water. It is then warmed gently for a few minutes with dilute caustic soda solution. The base is liberated, filtered, washed with water and recrystallised from spirit. NHCCH5 2CS(NHC6H6)2+ HCl = CSNC H6 + C.N HC6H6.HCl + H2S: NC6H6 Thiocarbanilide. Phenyl Mustard Triphenylguanidine Oil. Hydrochloride. Properties.--Colourless needles; m. p. 143. Reaction.--Boil for a short time with moderately strong caustic soda solution. Aniline is formed. C: NC6H6( N H C6H6)2+2 NaOH + H20 = 3C6H6N H2+Na2C O3. See Appendix, p. 281. Preparat1on 62. Diazobenzene Sulphate, C6H5: N.SO4H N Griess, Annalen, 1866, 137, 76; Knoevenagel, Ber., 1895, 28, 2049. 15 grms. aniline. ' 140 (175 c.c.) absolute alcohol.1 30 (16 c.c.) conc. sulphuric acid. 20 amyl nitrite. Mix the-aniline and alcohol and add the concentrated sulphuric acid in a slow stream with constant shaking. The precipitate of aniline sulphate, which first appears, redissolves. Cool the mixture to 30 and keep at 30--35 (thermometer in the liquid) and out of direct sunlight whilst the amyl nitrite is dropped in from a tap-funnel. Then cool in ice water and leave for half an hour. The diazobenze...
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