| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
Esters of carboxylic acids are widely used compounds around our life. In our laboratory, the experiment detecting esters in various products around us has been developed as teaching materials. To detect esters utilizing coloring reaction, we used the hydroxamic acid method. In the conventional method, high concentration of sodium hydroxide solution and organic solvent like ethanol must be used to detect hydrophobic esters. We have investigated the improved safe method of hydroxamic acid method to perform all reactions in aqueous media. We found that certain cationic surfactants are able to promote the reaction between esters and hydroxyl amine, in basic aqueous solution. Utilizing this system, we’ve developed the experiments to detect esters in perfumes, plastics and fibers. Furthermore we have developed the experiment identifying plant oils with different average molecular weight, and structural isomers of esters.
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