What is the flash point of diesel?

[FelicityAnn]

Diesel has a flash point above 55 degrees. Below are specific details about flash point: 1. Definition of flash point: The flash point of gasoline is ±46°C, while diesel has a flash point of 55°C under normal pressure. Flash point is the lowest temperature at which a flammable substance can ignite (instantaneous combustion). At the flash point temperature, only the mixture of vapor and air from the liquid can burn, not the liquid itself. This is because the evaporation rate of the liquid is relatively slow at the flash point temperature. 2. Flash fire: During a flash fire, the vapor mixture burns out quickly, and the liquid does not have enough time to evaporate the necessary flammable vapor to sustain the combustion, causing the flash fire to stop. Although the flash fire stops, it indicates a significant fire hazard. Therefore, the flash point is a key indicator for assessing the fire risk of oil products. For homologous flammable liquids, the flash point follows certain patterns: it increases with molecular weight, increases with density, increases with boiling point, and increases with decreasing vapor pressure.