Explosive substances release pressure, gas, and heat suddenly when they are subjected to shock, heat, or high pressure.
A mass explosion is one which affects almost the entire load instantaneously. Examples: dynamite, TNT, black powder.
Emergency Response Guidebook Guide Number 112 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 500 meters (1/3 mile) in all directions.
Explosives in this division have a projection hazard but not a mass explosion hazard. Examples: aerial flares, power device cartridges, detonating cord.
Emergency Response Guidebook Guide Number 112 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 500 meters (1/3 mile) in all directions.
Explosives in this division have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard. Examples: propellant explosives, liquid-fueled rocket motors.
Emergency Response Guidebook Guide Number 112 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 500 meters (1/3 mile) in all directions.
These explosives present a minor explosion hazard. The explosive effects are largely confined to the package and no projection of fragments of appreciable size or range is to be expected. An external fire must not cause virtually instantaneous explosion of almost the entire contents of the package. Examples: signal cartridges, practice ammunition, line-throwing rockets.
Emergency Response Guidebook Guide Number 114 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all directions.
These explosives have a mass explosion hazard but are so insensitive that there is very little probability of initiation or of transition from burning to detonation under normal conditions of transport. Example: pilled ammonium nitrate fertilizer-fuel oil mixtures.
Emergency Response Guidebook Guide Number 112 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 500 meters (1/3 mile) in all directions.
These articles contain only extremely insensitive detonating substances and demonstrate a negligible probability of accidental initiation or propagation.
Emergency Response Guidebook Guide Number 112 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 500 meters (1/3 mile) in all directions.
Examples: propane, methyl chloride, butadienes.
Emergency Response Guidebook Guide Number 118 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all directions.
Examples: compressed nitrogen, cryogenic argon.
The green placards shown below are used for inert gases in Division 2.2.
Emergency Response Guidebook Guide Number 121 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all
directions.
The yellow placards shown below are used for oxidizing gases in Division 2.2.
Emergency Response Guidebook Guide Number 122 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all
directions.
Examples: chlorine, hydrogen fluoride, arsine, methyl bromide.
These gases are toxic Poisonous; can injure or kill people or other organisms by inhalation.
Emergency Response Guidebook Guide Number 123 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all directions.
These liquids evolve flammable vapors in air at temperatures of 140 degrees F or below, as determined by a specific method. Examples: acetone, gasoline, toluene.
Emergency Response Guidebook Guide Number 127 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) in all directions.
These liquids evolve combustible vapors in air at temperatures between 140 degrees F and 200 degrees F, as determined by a specific method. Examples: no. 6 fuel oil, mineral oil, peanut oil.
Emergency Response Guidebook Guide Number 127 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) in all directions.
Emergency Response Guidebook Guide Number 128 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) in all directions.
Emergency Response Guidebook Guide Number 128 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) in all directions.
Flammable solids include materials other than explosives that are likely to cause fire by self-ignition through friction, absorption of moisture, spontaneous chemical changes, or as a result of heating. Examples: magnesium, nitrocellulose.
Emergency Response Guidebook Guide Number 134 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 25 meters (75 feet) in all directions.
Examples: charcoal briquettes, phosphorus.
Emergency Response Guidebook Guide Number 136 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Examples: calcium carbide, magnesium powder, sodium hydride.
Emergency Response Guidebook Guide Number 139 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Oxidizers can cause or enhance the combustion of other materials, usually by providing oxygen. Examples: ammonium nitrate, calcium hypochlorite.
Emergency Response Guidebook Guide Number 143 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25
meters (75 feet) for solids.
Organic peroxides are unstable and may react violently if mishandled. Examples: methyl ethyl ketone peroxide, dibenzoyl peroxide.
Emergency Response Guidebook Guide Number 148 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Poisons (also called toxic materials, toxic agents, or toxins) can cause injury or death when they enter the bodies of living things. This division includes poisonous materials, other than gases, known to be so toxic to humans as to afford a hazard to health during transportation, or which, in the absence of adequate data on human toxicity, have proved to be hazardous to laboratory animals. Also included are irritating materials, with properties similar to tear gas, which cause extreme irritation, especially in confined spaces. Examples: aniline, arsenic compounds, hydrocyanic acid, tear gas, chemical warfare agents.
Emergency Response Guidebook Guide Number 153 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Also called etiologic agents or disease-causing agents. This division includes materials known to contain or suspected of containing a pathogen. A pathogen is a virus or micro-organism (including its viruses, plasmids, or other genetic elements, if any) or a proteinaceous infectious particle (prion) that has the potential to cause disease in humans or animals. Examples: anthrax, botulism, tetanus.
Emergency Response Guidebook Guide Number 153 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Radioactive materials are materials containing radionuclides where both the activity concentration and the total activity in the consignment exceed specified values. A radionuclide is a radioactive species of an atom (e.g., tritium and strontium 90 are radionuclides of elements hydrogen and strontium). Examples: uranium hexafluoride, cobalt, "yellow cake."
Emergency Response Guidebook Guide Number 163 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 25 meters (75 feet) in all
directions.
Corrosive materials are (a) liquids or solids that can cause full thickness destruction of human skin tissue at the site of contact, within a specified period of time, or (b) liquids that can severely corrode steel or aluminum. Examples: nitric acid, sulfuric acid, sodium hydroxide.
Emergency Response Guidebook Guide Number 153 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
This class includes any material which presents a hazard during transportation but does not meet the definition of any other hazard class. Examples: PCBs, molten sulfur.
Emergency Response Guidebook Guide Number 171 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
This placard indicates a container or vehicle carrying two or more categories of hazardous materials, all in amounts less than 1,000 pounds. Check labels on containers or shipping papers to identify the materials.
Emergency Response Guidebook Guide Number 111 (Note:)
In a response to a hazardous substance, use this guide unless you can obtain the UN/NA number United Nations-North America number. (Also UN Number or DOT Number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. Often preceded by "UN": e.g., "UN1219." or name of the substance. If you have either the substance's name or UN/NA number, use that information to search the Emergency Response Guidebook for the guide for the substance. In some cases, this may be a different guide than the guide for the class or division shown here.
Immediately isolate area: 100 meters (330 feet) in all directions.
One or more materials listed as marine pollutant(s) (49 CFR 172.101 Appendix B), at concentration(s) high enough to be harmful to marine life.
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