What is the flame spread of diesel fuel?

Diesel fuel has a relatively low flame spread compared to more volatile fuels like gasoline. Its flash point is typically above 60°C (140°F), meaning it requires a higher temperature to ignite. When ignited, diesel burns steadily, but it doesn’t spread flames as rapidly due to its higher viscosity and lower volatility. This characteristic makes diesel fuel less hazardous in terms of flame spread in comparison to many other fuels.