Abstract
The identification of ethanol of synthetic and biochemical origins was considered. Along with the determination of acetone, 2-butanol, methyl ethyl ketone, tert-butanol, crotonaldehyde, and other impurities in ethanol, it was proposed to use another criterion of the synthetic origin of ethanol, the isopropanol : methanol concentration ratio. The proposed criterion was applied to the gas-chromatographic analysis of various synthetic and biochemical samples of crude alcohols and rectified alcohols. Because isopropanol is difficult to remove by rectification, the proposed criterion for determining the origin of ethanol is applicable to not only crude alcohols but also rectified alcohols (as distinct from other criteria).
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