Department of Transportation:
The DOT (Department of Transportation) has changed the definition of flammable liquids in its Hazardous Materials Regulation, 49 CFR parts 170 to 179. They are defined as any liquid which provides off flammable vapors at or below a temperature of 80ºF. This definition is important since the DOT Flammable Liquid Label, described in Figure, is one means through those containers of flammable liquids could be identified for receiving, shipping, and transportation.
Figure: DOT Flammable Liquid Labels