The relationship between diesel flash point and freezing point
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Factors affecting diesel flash point and pour point, their correlation
Flash point and freezing point are two different concepts and standards. The flash point is the temperature at which vaporization occurs at high temperatures, while the freezing point is the temperature at which solidification takes place at low temperatures; it is difficult to determine a quantitative relationship between them.
For straight-run diesel obtained through direct distillation in an atmospheric pressure tower, the flash point is related to the freezing point, but this relationship is not very strong; there is essentially no strict mathematical relationship between them. For the blended finished diesel, this relationship may be even less pronounced. The components that adjust the flash point and those that adjust the freezing point are the components at the ends of the diesel fraction, not the intermediate components.