Practical physiological chemistry : a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . ation of alcohol, chrysa-robin. creosote, cresol, dionin, guaiacol, heroin, morphine,naphthalene, opium, phenol, tannic acid, etc., will also causethe urine to give a positive reaction. The following chemical reactions take place in this test: (a) NaN02 + HCl = HN02 + NaCl. NH2 N / / \ (b) CCH4 +HNOo = C0H4 N + 2PL0. \ \ / HSO3 S03 Sulphanilic acid. Diazo-benzenesulphonic acid. Solutions a and b should be preserved in well stoppered vessels andmixe
Practical physiological chemistry : a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . ation of alcohol, chrysa-robin. creosote, cresol, dionin, guaiacol, heroin, morphine,naphthalene, opium, phenol, tannic acid, etc., will also causethe urine to give a positive reaction. The following chemical reactions take place in this test: (a) NaN02 + HCl = HN02 + NaCl. NH2 N / / \ (b) CCH4 +HNOo = C0H4 N + 2PL0. \ \ / HSO3 S03 Sulphanilic acid. Diazo-benzenesulphonic acid. Solutions a and b should be preserved in well stoppered vessels andmixed in the proportion 1 : 50 when required. Green asserts that greaterdelicacy is secured by mixing the solutions in the proportion 1 : 100. Thesodium nitrite deteriorates upon standing and becomes unfit for use in thecourse of a few weeks. CHAPTER XIX. URINE: ORGANIZED AND UNORGANIZEDSEDIMENTS. The data obtained from carefully conducted microscopicalexaminations of the sediment of certain pathological urinesare of very great importance, diagnostically. Too little em-phasis is sometimes placed upon the value of such findings. Fig. 97. Fig.
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