リグロイン

化学的特性Petroleum ether is a flammable liquid used as a universal solvent and extractant during the processing of different chemicals, like fats, waxes, paints, varnishes, furniture polish thinning, as detergent, and as fuel. The major components include paraffi ns, olefi ns, naphthenes, aromatics, and about 10%–40% ethyl alcohol.

解説沸点約150 ℃ 以下の工業ガソリンの一種．低沸点炭化水素の混合物よりなる．軽質留分の多い原油を蒸留して得られたナフサを高度に精製し，不純物質を除いた無色透明の石油製品で，しみ抜き，機械の洗浄，その他各種の溶剤として使用される．ベンジンのうち，とくに沸点の低い製品(沸点約30～70 ℃)は石油エーテルとよばれる．森北出版「化学辞典（第2版）

用途食品及び水中等の極微量の農薬及びPCBの定量における溶媒。

用途食品及び水中等の農薬及びPCB定量における溶媒。

用途生体試料中等のダイオキシン類の分析における溶媒。

使用Petroleum ether 35/60 is used as a mobile phase in High Performance Liquid Chromatography and Liquid Chromatography coupled with Mass Spectrometry.

一般的な説明Colorless liquid with the odor of gasoline. Less dense than water and insoluble in water. Hence floats on water. Also refered to as Varnish Makers & Painters Naphtha. This petroleum fraction is similar to Petroleum Ether (CAS 8030-30-6) but V.M. & P. is a heavier distillate. Flash point ranges from 20° F to 100° F.

純化方法Shake it several times with conc H2SO4, then 10% H2SO4 and concentrated KMnO4 (to remove unsaturated, including aromatic, hydrocarbons) until the permanganate colour persists. Wash it with water, aqueous Na2CO3 and again with water. Dry it with CaCl2 or Na2SO4, and distil it. It can be dried further using CaH2 or sodium wire. Passage through a column of activated alumina, or treatment with CaH2 or sodium, removes peroxides. For the elimination of carbonyl-containing impurities without using permanganate, see n-heptane. These procedures could be used for all fractions of pet ethers. See skellysolve below, p. 178. Rapid purification: Pass it through an alumina column and fractionally distilling, collecting the desired boiling fraction.