A Laboratory Manual of Physiological And Pathological Chemistry. for Students in Medicine
The book A Laboratory Manual of Physiological And Pathological Chemistry. for Students in Medicine was written by author Salkowski, Ernst Leopold, 1844-1923 Here you can read free online of A Laboratory Manual of Physiological And Pathological Chemistry. for Students in Medicine book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Laboratory Manual of Physiological And Pathological Chemistry. for Students in Medicine a good or bad book?
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In dilute solutions this last compound is at once formed. Of the reactions, 3 and 4 are the most dehcate and the most used. After the medicinal use of phenol it may be found in the urine. Horse-urine and pathological urine contain cresol instead of phenol, or at least in much larger quantity. The reactions of cresol (paracresol) are similar to those of phenol, but less marked. The color with ferric chloride is not blue,' but a dirty gray. This is partly due to the fact that the cresol is far le...ss soluble in water than the phenol. (6) Phenyl Sulphuric Acid or Cresyl Sulphuric Acid. Detection of Phenol in Urine. Phenol and cresol are never found as such in urine, but always combined with sulphuric acid in the form of the potas- sium salts (so-called conjugate or ethereal sulphates), ^ \0K "^ ^^\0K Potassium phenyl sulphate Potassium cresyl sulphate 108 PHYSIOLOGICAL AND PATHOLOGICAL CHEMISTRY. and also in combination with glycuronic acid. To isolate the phenols or to detect their presence, these sulphuric acid esters must be decomposed.
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