Class 3 Hazards

Class 3 Hazards are flammable liquids with flash point no more than 60 ˚C (140 ˚F) and it also include combustible liquid with flash point below 93 ˚C (200 ˚F).

Class 3 Hazard has 4 divisions:

  1. Flammable Liquid
  2. Combustible Liquid
  3. Fuel Oil
  4. Gasoline

Flammable Liquid

A flammable liquid is a liquid having a flash point of not more than 60 °C (140 °F), or any material in a liquid phase with a flash point at or above 37.8 °C (100 °F) that is intentionally heated. The following exceptions apply:

  1. Any mixture having one or more components with a flash point of 60.5 °C (141 °F) or higher, that make up at least 99 percent of the total volume of the mixture if the mixture is not offered for transportation or transported at or above its flash point.
  2. Any liquid with a flash point greater than 35 °C (95 °F) which does not sustain combustion according to ASTM 4206.
  3. Any liquid with a flash point greater than 35 °C (95 °F) and with a fire point greater than 100 °C (212 °F) according to ISO 2592.
  4. Any liquid with a flash point greater than 35 °C (95 °F) which is in a water-miscible solution with a water content of more than 90 percent by mass.

Example: Spirit, Acetone, Ethanol

Combustible Liquid:

A combustible liquid has a flash point above 60.5 °C (141 °F) and below 93 °C (200 °F).

A flammable liquid with a flash point at or above 38 °C (100 °F) that does not meet the definition of any other hazard class may be reclassified as a combustible liquid. This provision does not apply to transportation by vessel or aircraft, except where other means of transportation is impracticable. An elevated temperature material that meets the definition of a Class 3 material because it is intentionally heated and offered for transportation or transported at or above its flash point may not be reclassified as a combustible liquid.

Example: Diesel fuel, Kerosene, Linseed oil

Gasoline:

This placard is an alternative placard, which may be used for gasoline in non-bulk quantities.

Fuel Oil: 

This placard is an alternative placard, which may be used for fuel oil in non-bulk quantities.

Flash Point:

The flash point is the lowest temperature at which a substance vaporises into a gas, which can be ignited with the introduction of an external source of fire.

Fire Point:

The lowest temperature at which a volatile combustible substance continues to burn in air after its vapors have been ignited (as when heating is continued after the flash point has been determined) — compare ignition temperature.