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A hazardous material, as defined by the Secretary, is any particular quantity or form of a material that may pose an unreasonable risk to health and safety or property during transportation in commerce. [7] This includes materials that are explosive, radioactive, infectious, flammable, toxic, oxidizing, or corrosive.
The package testing is based on the packing group (hazard level) of the contents, the quantity of material, and the type of container. The UN recommendations are implemented by regulatory bodies in each country: Transport Canada, United States Department of Transportation, [3] etc. Some carriers have additional requirements.
Note 2: A liquid in Division 6.1 meeting criteria for Packing Group I, Hazard Zones A or B stated in paragraph (a)(2) of this section is a material poisonous by inhalation subject to the additional hazard communication requirements in 49CFR 172.203(m)(3), 49CFR 172.313 and Table 1 of 49CFR 172.504(e) of this subchapter.
Photograph of a placard with NA number 3082. The NA numbers (North American Numbers are assigned by the United States Department of Transportation, supplementing the larger set of UN numbers, for identifying hazardous materials. NA numbers largely duplicate UN numbers, however a selection of additional numbers are provided for materials that ...
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 1,000 pounds (450 kg) or less of a Table 2 ...
This first document was 63 pages long, containing information for only 29 chemicals. The next version, appeared in May 1976, as Hazardous Materials - Emergency Action Guide. [2] A revised version would be released in January 1977, which added an image of the relevant, newly adopted hazardous material placards to each substance's entry. [3]
NFPA 704 safety squares on containers of ethyl alcohol and acetone. "NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.
A United States placard showing the UN number 1814, indicating potassium hydroxide solution, on a railroad tank car.. A UN number (United Nations number) is a four-digit number that identifies hazardous materials, and articles (such as explosives, flammable liquids, oxidizers, toxic liquids, etc.) in the framework of international trade and transport.
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