distillation under reduced pressure

Japanese: distillation under reduced pressure(英語表記)distillationunderreducedpressure
distillation under reduced pressure

…A distillation method used to distill substances that decompose or polymerize when the temperature rises. Generally, this refers to distillation performed at a pressure of 200 mmHg or less, and when it is more than 200 mmHg, it is called distillation under reduced pressure. In the past, vacuum distillation was generally performed as a batch distillation in the simple distillation style, but recently, with the shift to fine chemicals in the chemical industry, there has been a demand for advanced purification and separation, and continuous distillation in the distillation column style has become more common.

*Some of the terminology that refers to "distillation under reduced pressure" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…温度が高くなると分解したり重合したりする物質を蒸留する際に用いられる蒸留法。一般に200mmHg以下の圧力で行う蒸留をいい,200mmHg以上の場合には減圧蒸留distillation under reduced pressureと呼んでいる。以前は一般に真空蒸留は単蒸留形式の回分蒸留が行われることが多かったが,最近では化学工業のファインケミカル化に伴って高度の精製分離が望まれることが多くなり,蒸留塔形式の連続蒸留が行われることが多くなってきている。…

※「distillation under reduced pressure」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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