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The Determination of Free Menthol in Peppermint Oil by Chromatographic Analysis**School of Pharmacy North Dakota Agricultural College, Fargo

✍ Scribed by Hamarneh, S.K. ;Blake, M.I. ;Miller, C.E.

Publisher: Elsevier
Year: 1956
Weight: 359 KB
Volume: 45
Category: Article
ISSN: 0095-9553
DOI: 10.1002/jps.3030451102

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Barbiturate salts in various dosage forms are determined by liberating the barbituric acid from the salt by passage through a cation exchange resin. Dimethylformamide is used as the solvent. The barbituric acid is titrated visually with 0.1 N sodium methoxide in benzene-methanol. The method is rapid