BHTの比色分析法-1-
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BHT (butylated hydroxy toluene ; 2, 6-di-<I>tert</I>-butyl-4-methyl phenol) is now widely used as an antioxidant, but a good report has not yet been made on its quantitative analysis. The authors found that when BHT was heated in a mixture of ethanol and hydrochloric acid and was then made to react with <I>p</I>-nitrobenzenediazonium salt, a stable azo dye was produced. This color reaction is not only very sensitive, but also is rarely interrupted by many reductive compounds. According to the analytical method based on this principles, it is possible to detect as little as 0.05μg BHT and to determine about 2 mg of it with variation coefficient of 1.4%.
- 社団法人 日本分析化学会の論文
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