HAZMAT Class 3 Flammable Liquids

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A flammable liquid is a liquid with flash point of not more than 60.5°C (141°F), or any material in a liquid phase with a flash point at or above 37.8°C (100°F).

Divisions[edit source | edit]

Class 3: Flammable Liquids

A flammable liquid is a liquid having a flash point of not more than 60.5°C (141°F), or any material in a liquid phase with a flash point at or above 37.8°C (100°F) that is intentionally heated and offered for transportation or transported at or above its flash point in a bulk packaging. The following exceptions apply:

  1. Any liquid meeting one of the definitions specified in 49CFR 173.115.
  2. 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.
  3. Any liquid with a flash point greater than 35°C (95°F) which does not sustain combustion according to ASTM 4206 or the procedure in Appendix H of this part.
  4. 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.
  5. 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.

Flash Point: The flash point is the minimum temperature at which a liquid gives off vapor within a test vessel in sufficient concentration to form an ignitable mixture with air near the surface of the liquid.

A list of Class 3 hazardous materials is available online.[1]

Placards[edit source | edit]

Class 3: Flammable LiquidsHazardous Materials
Class 3: Flammable Liquids
Class 3: Combustible (Alternate Placard)Hazardous Materials
Class 3: Combustible (Alternate Placard)
Class 3: Fuel Oil (Alternate Placard)Hazardous Materials
Class 3: Fuel Oil (Alternate Placard)
 
Class 3: Gasoline (Alternate Placard)Hazardous Materials
Class 3: Gasoline (Alternate Placard)
 

Alternate Placards and Labeling[edit source | edit]

Compatibility Table[edit source | edit]

Load and Segregation Chart
 Weight1.11.21.31.41.51.62.12.22.22.334.14.24.35.15.26.178
ABA
31001 lbXXXOX    XO    O X  
Key
The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
  • *: This indicates that segregation among different Class 1 materials is governed by the compatibility table in 49CFR 177.848(f)
  • X: These materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
  • O: Indicates that these materials may not be loaded, transported or stored together in the same transport vehicle or storage facility during the course of transportation, unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
  • A: This note means that, notwithstanding the requirements of the letter 'X', ammonium nitrate fertilizer may be loaded or stored with Division 1.1 or Division 1.5 materials.

Packing Groups[edit source | edit]

Class 3 Packing Groups
Packing GroupFlash Point
(Closed-Cup)
Initial
Boiling Point
I <=35°C (95°F)
II<23°C (73°F)>35°C (95°F)
III>=23°C, <=60°C (140°F)>35°C (95°F)

References[edit source | edit]