...Also, dilute alkali causes aldol condensation to produce aldol and crotonaldehyde. It polymerizes exothermically with a small amount of acid (such as sulfuric acid) to produce the trimer paraldehyde (C 2 H 4 O) 3 (melting point 12.45°C, boiling point 128.0°C, aromatic liquid). When kept below 0°C and treated with acid in the same way, it becomes metaldehyde (C 2 H 4 O) n ( n = 4-6). ... *Some of the terminology explanations that mention "paraldehyde" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また希アルカリの作用でアルドール縮合を起こし,アルドール,クロトンアルデヒドを生成する。微量の酸(たとえば硫酸)によって発熱的に重合し,三量体のパラアルデヒドparaldehyde(C2H4O)3(融点12.45℃,沸点128.0℃の芳香のある液体)となる。また0℃以下に保ち,同じように酸で処理するとメタアルデヒドmetaldehyde(C2H4O)n(n=4~6)となる。… ※「paraldehyde」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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