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What is the significance of Aniline Point?

April 26, 2017aniline point significance

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What is the significance of Aniline Point?

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Aniline point is defined as the minimum temperature at which equal volumes of anhydrous aniline and oil mix together. Aniline being an aromatic compound freely mixes with aromatic so a low aniline point indicates low diesel index (because of high percentage of aromatics). Significance: High aniline point indicates that the fuel is highly paraffinic and hence has a high Diesel index and very good ignition quality. In case of aromatics the aniline point is low and the ignition quality is poor. This test is useful for calculating Diesel Index.