An alcohol with a large molecular weight. Usually refers to aliphatic alcohols with 12 or more carbon atoms. It is esterified with fatty acids and exists widely in animals and plants as a wax. It can be obtained by saponifying wax with concentrated sodium hydroxide or by reducing higher fatty acid esters. It is a waxy neutral substance that is insoluble in water. As the number of carbon atoms increases, it becomes less soluble in organic solvents. Cetyl alcohol C 16 H 33 OH is obtained from spermaceti, ceryl alcohol C 26 H 53 OH from China wax, and myricyl alcohol C 30 H 61 OH from beeswax. It is used as a raw material for surfactants, plasticizers, and synthetic lubricants. Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
分子量の大きいアルコール.普通,炭素数12以上の脂肪族アルコールをさす.脂肪酸とエステルになって,ろうとして動物,植物内に広く存在する.ろうを濃厚な水酸化ナトリウムでけん化したり,高級脂肪酸エステルを還元すると得られる.ろう状の中性物質で,水に不溶.炭素数が大きくなると有機溶媒にも溶けにくくなる.セチルアルコールC16H33OHは鯨ろうから,セリルアルコールC26H53OHは支那(しな)ろうから,ミリシルアルコールC30H61OHはみつろうから得られる.界面活性剤,可塑剤,合成潤滑油の原料に用いられる. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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