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U.N. CLASSES & DIVISIONS - Definitions & Examples 1.1 A detonating or otherwise maximum explosion hazard. Example: TNT. 1.2 An explosive charge with a projection hazard Example: Cannon shells. Bombs. 1.3 An explosive device described as a rapid combustion as opposed to a violent detonation.Examples: Rocket motors, special fireworks (a la Fourth of July), flash powders (used by rock groups in concerts.) 1.4 Certain manufactured articles that may contain component parts that are division 1.1 or 1.3 Explosives but in such limited quantities and packaged in such a way as to be considered a minor hazard. Examples: small arms ammunition, rivet gun charges, common fireworks, such as sparklers, toy torpedoes, etc. 1.5 Explosive material tested and found to so insensitive that there is very little probability of accidental initiation to explosion. Example: Construction and demolition explosives - NOTE: VERY RIGID TESTING AND APPROVAL PROCESS REQUIRED. 1.6 Extremely insensitive explosives that do not have a mass explosion hazard and Demonstrate a negligible probability of accidental initiation or propagation. These materials are designated by the National Competent Authority of the country of manufacture. 2.1 FLAMMABLE GAS - A compressed gas that ignites when subjected to a source of ignition in a mixture of 13% or less with air, or produces a flame projection from an open valve when exposed to an ignition source, or causes a flame propagation when exposed to open fire. Examples: Propane, Butane, and LPG. 2.2 NON-FLAMMABLE GAS - Any compressed gas other than a flammable gas (2.2) or a toxic gas (2.3). Examples: Helium, Nitrogen, Argon. 2.3 TOXIC GAS - A gas that can cause death due to very small exposure to the gas. Example: Phosgene (gas),
4.1 FLAMMABLE SOLID - Any solid material, other than an explosive, which is liable to cause fires through friction or which can be ignited readily and when ignited it burns so vigorously and persistently as to create a serious transportation risk. This division also includes self-reactive substances that can undergo strong exothermic reactions and desensitized explosives that may explode if not diluted sufficiently (wetted).Examples: Aluminum Powder (friction); Solidified Alcohol (STERNO) (easily ignitable); Benzene Sulpho-hydrazide (self-reactive) Zirconium Powder, wetted (desensitized explosive) 4.2 SUBSTANCES LIABLE TO SPONTANEOUS COMBUSTION - materials that are liable to heat up during transportation or in contact with air and liable to catch fire. Examples: Wet Rags or Wet Cotton or Activated Charcoal or PYROPHORIC LIQUIDS. 5.1 OXIDIZERS - A substance such as chlorates or nitrates that yields oxygen in a fire causing more intense flame and heat. Examples: Food Additives and Food in Powder Form (grain mills and silos that explode); OXYGEN GENERATORS - ValuJet!. Pool chemicals - chlorine powder. 5.2 ORGANIC PEROXIDES - An organic compound containing
bivalent -O-O- structure and which may be considered a derivative of hydrogen
peroxide where one or more of the hydrogen atoms have been replaced by organic
radicals. Example: Dibenzoyl Peroxide - 6.1 TOXIC SUBSTANCES - Liquids or solids that are known or presumed to cause death by either by absorption through the skin or through ingestion or by inhalation of dusts or mists. Examples: Cyanide Solid and Cyanide Solutions. 6.2 INFECTIOUS SUBSTANCES - Viable micro-organisms or their toxins that may cause human or animal diseases; genetically engineered micro-organisms. Examples: Measles and Smallpox; HIV (aids). 7 RADIOACTIVE MATERIAL - Any material that spontaneously
emits ionizing radiation and has a specific activity greater than 74 Bq. per
gram (0.002 microcuries per gram). Note curies are no longer used to measure
activity. The not-so-new International Standard is 9 Miscellaneous Dangerous Goods - Materials that do not meet the definition of hazard classes 1 through 8 but may present a hazard during transportation; or, materials that have anesthetic, noxious or similar properties, that can cause extreme annoyance or discomfort to crewmembers so as to prevent the correct performance of their duties in the event of a spill on an aircraft; or, materials shipped at elevated temperatures; or, materials that are hazardous substances, or hazardous wastes, or marine pollutants that can adversely affect the environment over a period of time. ORM-D* CONSUMER COMMODITIES - Small quantities of hazardous
materials that meet the definition of CONSUMER COMMODITY and qualify as LIMITED
QUANTITIES for the hazard class. Examples: most aerosols, cosmetics. * THESE CLASSIFICATIONS ONLY EXIST IN THE U.S.A.
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