Aniline point

The aniline point (AP) gives an indication of the aromatic content and is a widely specified parameter for lubricants.

detection

It is the temperature (in ° C) at which a single-phase and therefore clear mixture of equal volume fractions of a lubricant or lubricant or oil with aniline becomes cloudy again when it cools down due to separation.

The higher the aromatic content of the tested oil, the lower the aniline point.

Individual evidence

↑ Entry on aniline point. In: Römpp Online . Georg Thieme Verlag, accessed on July 26, 2016.
↑ Standard DIN ISO 2977: 2000-11 Mineral oil products and solvents from hydrocarbons - Determination of the aniline point and mixed aniline point ( beuth.de ).

[1] Entry on aniline point. In: Römpp Online . Georg Thieme Verlag, accessed on July 26, 2016.

[2] Standard DIN ISO 2977: 2000-11 Mineral oil products and solvents from hydrocarbons - Determination of the aniline point and mixed aniline point ( beuth.de ).