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A gas-liquid chromatographic procedure has been developed for the determination of the preservative dehydroacetic acid (DHA) in frozen cut squash and white wine. The cleanup procedure uses the acidic character of DHA to enhance separation from interfering substances. Recoveries were 93-104% from squash fortified at 30, 65, and 130 ppm and 96-99% from wine fortified at 50, 100, and 200 ppm. The method can be used to establish that the amount of DHA used in squash does not exceed the permissible level of 65 ppm.
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