Why test the boiling and freezing points of petroleum oil?

The boiling point and freezing point of petroleum are two important physical properties that have a significant impact on the quality and performance of petroleum products. Therefore, it is necessary to test the boiling and freezing points of petroleum to ensure that petroleum products comply with relevant standards and regulations.
The boiling point of petroleum refers to the temperature range at which it begins to boil and completely boils under atmospheric pressure. The boiling point test of petroleum can help determine the composition and properties of petroleum products, such as the initial and final boiling points, which can be used to determine the volatility and evaporation of petroleum products. These pieces of information are crucial for the production and use of petroleum products, as they can affect their combustion performance, thermal stability, evaporation loss, and environmental impact.
The freezing point of petroleum refers to the temperature at which petroleum begins to crystallize at low temperatures. The freezing point test of petroleum products can help determine the available temperature range of petroleum products. For example, freezing point testing of diesel and fuel oil can help determine whether they are suitable for use in low-temperature environments and what additives they need to add to improve their low-temperature performance.
In summary, testing the boiling and freezing points of petroleum can provide important information about the composition and properties of petroleum products, help ensure that petroleum products comply with relevant standards and regulations, and meet the needs and requirements of users.