Pour point and flash point are two common properties of petroleum products, and there are obvious differences in their definitions and measurement methods.
Pour point refers to the minimum temperature at which a petroleum product flows when cooled to the sample under specified test conditions. Its unit is degrees Celsius. Pour point is an important indicator to measure the low-temperature flow properties of petroleum products. It can reflect the fluidity of the product in low-temperature environments.
The flash point refers to the lowest temperature at which a mixture of steam and air on the surface of a petroleum product can flash ignite under specified test conditions. Its unit is degrees Celsius. Flash point is an important indicator to measure the stability and combustion performance of petroleum products in high temperature environments.
Flash point, on the other hand, is the property that indicates the lowest temperature at which a liquid gives off enough vapor to form a flammable mixture with air. It is a measure of the volatility and flammability of a substance. Flash point is important for safety considerations because it determines the fire risk associated with a substance. In the case of lubricants, a higher flash point means a lower risk of fire or combustion under normal operating conditions.
Therefore, pour point and flash point have different meanings in the production and application of petroleum products. Understanding their definitions and measurement methods is very important for the quality control and safe use of petroleum products.