What is aniline point?

What is aniline point?

The aniline point is a physical and chemical index to characterize the mutual solubility of petroleum products and aniline, which is defined as the minimum temperature at which the two are mixed in the same volume to form a single liquid phase.

The determination principle is based on the difference in solubility of hydrocarbons in polar solvents: record the instantaneous temperature value at which the first clouding occurs by heating the mixture to transparency and cooling.

This index is closely related to hydrocarbon composition:

Polarity correlation: the aniline point of aromatic hydrocarbon is the lowest (generally<30 ℃), the alkane is the highest (60-70 ℃), and the cycloalkane is between the two (35-55 ℃);

Application value: it is used to evaluate the hydrocarbon composition ratio, solubility and base oil quality of oil products, and serves as technical indicators of transformer oil, etc;

Industrial application: it can judge the compatibility of oil and rubber materials and calculate parameters such as cetane index of diesel;

The determination method is based on GB/T 262, ASTM D611 and other standards. Different devices are used to distinguish transparent/dark oil products. The purity of aniline, sample dehydration and cooling speed (≤ 1 ℃/minute) shall be strictly controlled.

SD262B Automatic aniline point tester is designed and manufactured according to the requirements of national standard GB/T262 "Aniline point determination method of petroleum products" and ASTM D611. It is suitable for the determination of aniline point of light colored petroleum products and dark colored petroleum products.

7-inch color LCD touch screen, stylish and beautiful.

Chinese man-machine interface, clear and intuitive.

The photoelectric sensor imported from abroad is adopted, and the test results are accurate and repeatable.

With over-temperature alarm function, the test sample temperature exceeds 170℃, the buzzer will automatically alarm and stop the test.