各種含水デカン酸メチル, デカン酸, 1-デカノールの溶存水と溶存酸素の相互作用について

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We have investigated the interaction of the dissolved water and oxygen in methyl decanoate, decanoic acid, and 1-decanol, which were chosen as model compounds of fatty oils and their derivatives. On the bases of the time of oxygen saturation in water, the saturation time in decanoic acid containing water (6112350 ppm) was shorter than in water (0.650.88 times), but in 1-decanol (19130794 ppm H2O) it was longer than that in water (1.51.9 times). In methyl decanoate (452789 ppm H2O), it was changed from 0.75 to 2.1 times of the saturation time in water. The interaction of the dissolved water and oxygen was small under the influence of the formation of hydrogen bonds between hydroxyl and carboxyl groups and the dissolved water. While the water dissolved in methyl decanoate did not form hydrogen bonds and filled up the intermolecular free volume, it is considered that the dissolving rate of oxygen may greatly change with the amount of dissolved water. Compared the dissolution time of oxygen with the degassing time of oxygen in above three compounds containing water, the latter was longer than the former. From these results, it is shown that the dissolved water interacts with the dissolved oxygen.
社団法人日本油化学会の論文