saponification value

Japanese: saponification value(英語表記)saponificationvalue
saponification value

…The presence of hydrogen ions also accelerates the process, but alkali neutralizes the carboxylic acids produced and breaks the equilibrium, making it much more advantageous in practice. The number of milligrams of potassium hydroxide (KOH) required to saponify 1 gram of fat or oil or wax is called the saponification value. The value is lower for fats and oils that contain components that are difficult to saponify, such as high molecular weight glycerides, higher alcohols, and hydrocarbons. …

*Some of the terminology explanations that mention "saponification value" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…水素イオンの存在によっても促進されるが,アルカリのほうが生じたカルボン酸を中和して平衡を破る働きがあり,はるかに促進作用が大きいので実用的には有利である。 油脂あるいは蠟1gをケン化するのに要する水酸化カリウムKOHのmg数をケン化価saponification valueという。高分子量のグリセリドや,高級アルコール,炭化水素などのケン化されにくい成分を含む油脂ほど低い値をとる。…

※「saponification value」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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