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A U.S. DOT placard mounted on a railway tank car. The placard displays UN number 1129, indicating butyraldehyde, as well as the pictogram for a flammable liquid. [27] Materials on Table 2, which is all other hazardous materials not in Table 1, [j] must display placard if 1,001 pounds (454 kg) or more of the material is loaded into a vehicle. If ...
NFPA 704 placard of hydrofluosilicic acid. Notably, it is using the nonstandard COR sign. Notably, it is using the nonstandard COR sign. The development of NFPA 704 is credited to the Charlotte Fire Department after a fire at the Charlotte Chemical Company in 1959 led to severe injuries to many of the firefighters.
Flammable gases – Gases which at 20 °C and a standard pressure of 101.3 kPa: are ignitable when in a mixture of 13 percent or less by volume with air; or; have a flammable range with air of at least 12 percentage points regardless of the lower flammable limit. Alternative sign. Division 2.1 Non-flammable non-toxic gases – Gases which:
2.1 Flammable Gas: Gases which ignite on contact with an ignition source, such as acetylene, hydrogen, and propane. 2.2 Non-Flammable Gases : Gases which are neither flammable nor poisonous. Includes the cryogenic gases/liquids (temperatures of below -100 °C) used for cryopreservation and rocket fuels, such as nitrogen , neon , and carbon ...
Paint, corrosive, flammable or Paint related material, corrosive, flammable UN 3471: 8: Hydrogen difluorides solution, n.o.s. UN 3472: 8: Crotonic acid, liquid UN 3473: 3: Fuel cell cartridges, or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing flammable liquids UN 3474: 4.1
Division 4.1: Flammable Solid . Flammable solids are any of the following four types of materials: Desensitized Explosives: explosives that, when dry, are Explosives of Class 1 other than those of compatibility group A, which are wetted with sufficient water, alcohol, or plasticizer to suppress explosive properties; and are specifically authorized by name either in the 49CFR 172.101 Table or ...
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [4]
Flammable gases, or very volatile flammable liquids with flash points below 73 °F (23 °C), and boiling points below 100 °F (38 °C). Materials may ignite spontaneously with air (e.g., propane). 3. Materials capable of ignition under almost all normal temperature conditions.