REACTIONS AND IDENTIFICATION 337 dissolved, and the residue is solely diphenylurea. (M.ps. of phenyl-and i-naphthyl-urethanes, p-536-537.) (C) Carboxylic acids For aryl-substituted alcohols, such as benzyl alcohol, oxidation readily gives the corresponding acid (cf. p. 336). SPECIAL REACTIONS. Methanol (methyl alcohol). CH 3 OH. i. Methyl salicylate test. Heat i ml. of methanol with 0-5 g. of sodium salicylate (or free salicylic acid) and a few drops of cone. H 2 SO 4 gently for i minute. Cool, pour into a few ml. of cold water in a boiling-tube, and shake. Note the odour of methyl salicylate (oil of wintergreen). Ethyl salicylate (prepared by the same method) has an odour similar to that of methyl salicylate but less intense: it is therefore usually impracticable to attempt to distinguish methanol and ethanol by this test alone. Ethanol (ethyl alcohol). C 2 H 5 OH. i. Ethyl acetate test. Heat i ml. of ethanol with 0-5 g. of sodium acetate and a few drops of cone. H 2 SO 4 gently for about i minute.
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This note was uploaded on 09/19/2011 for the course CHM 2211 taught by Professor Castalleano during the Fall '06 term at University of Florida.