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・ Anilao
・ Anilao, Iloilo
・ Anilara
・ Anilazine
・ Anilda Leão
・ Anileridine
・ Anilicus
・ Aniliidae
・ Aniline
・ Aniline (data page)
・ Aniline (disambiguation)
・ Aniline acetate test
・ Aniline Blue WS
・ Aniline Island
・ Aniline leather
Aniline point
・ Aniline Yellow
・ Anilingus
・ Anilinium chloride
・ Anilio
・ Anilio, Elis
・ Anilio, Ioannina
・ Anilio, Magnesia
・ Anilite bomb
・ Anilkumar Patel
・ Anillaco
・ Anillaco, Catamarca
・ Anillidius
・ Anillidris
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Aniline point : ウィキペディア英語版
Aniline point
The aniline point of an oil is defined as the minimum temperature at which equal volumes of aniline () and the oil are miscible, i.e. form a single phase upon mixing.
The value gives an approximation for the content of aromatic compounds in the oil, since the miscibility of aniline, which is also an aromatic compound suggests the presence of similar (i.e. aromatic) compounds in the oil. The lower the aniline point, the greater is the content of aromatic compounds in the oil as obviously a lower temperature is needed to ensure miscibility.
The aniline point serves as a reasonable proxy for aromaticity of oils consisting mostly of saturated hydrocarbons (i.e. alkanes, paraffins) or unsaturated compounds (mostly aromatics). Significant chemical functionalization of the oil (chlorination, sulfonation, etc.) can interfere with the measurement, due to changes to the solvency of the functionalized oil.
==Determination of aniline point==
Equal volumes of aniline and oil are stirred continuously in a test tube and heated until the two merge into a homogeneous solution. Heating is stopped and the tube is allowed to cool. The temperature at which the two phases separate out is recorded as aniline point.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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