Signs, Labels, and Stickers

No placards or warning signs are required for the transport of neat biodiesel. However, biodiesel blends with diesel and kerosene are required to be transported in placarded trucks if the flash point of the blend is lower than 93°C (200°F), according to federal Department of Transportation regulations. If the flash point is lower than 60°C (140°F), the liquid is considered flammable and the Hazard Class 3 flammable placard is required (see Figure 17). Between 60° to 93°C (140°F and 200°F), the liquid is generally considered Hazard Class 3 combustible, and the combustible placard shown in Figure 16 is required for transport.

Local fire regulations determine the requirements for signage on storage containers, but typically tanks containing fuels (including B100) must be labeled with National Fire Protection Association diamonds. The National Fire Protection Association diamonds will indicate whether the fuel is flammable or combustible.