NA numbers (North America) are used to identify hazardous materials that are transported by road, rail, air, or water within the United States and Canada. These numbers are assigned by the United States Department of Transportation (DOT) and they are similar to UN numbers, which are assigned by the United Nations.
The range of NA numbers is from NA 8000 to NA 9279, and it includes a wide variety of hazardous materials such as explosives, flammable liquids and gases, toxic and infectious materials, radioactive materials, and many others. Each NA number corresponds to a specific hazard class and division, which determines the regulations that apply to the transport of that material.
As you mentioned NA 2212 is used to identify all types of asbestos, and NA 3334 is used to identify self-defense sprays, which are not covered by the UN numbers.
In addition to the NA numbers, the DOT also uses proper shipping names, technical names, and identification numbers (such as DOT-SP or DOT-E number) to identify hazardous materials. These additional labels are used to provide more specific information about the material and its hazards.
It is important for shippers, carriers, and other personnel involved in the transportation of hazardous materials to be familiar with the NA numbers and other identification labels, in order to ensure the safe and compliant transportation of these materials.
| NA Number | Class | Material |
|---|---|---|
| NA 0027 | 4.1 | Black powder for small arms |
| NA 0124 | 1.1D | Jet perforating guns, charged oil well, with detonator |
| NA 0276 | 1.4C | Model rocket motor |
| NA 0323 | 1.4S | Model rocket motor |
| NA 0331 | 1.5D | Ammonium nitrate-fuel oil mixture containing only prilled ammonium nitrate and fuel oil |
| NA 0337 | 1.4S | toy caps |
| NA 0494 | 1.4D | Jet perforating guns, charged oil well, with detonator |
| NA 1057 | 3 | Lighters, non-pressurized, containing flammable liquid, |
| NA 1203 | 3 | Gasohol gasoline mixed with ethyl alcohol, with not more than 10% alcohol |
| NA 1270 | 3 | Petroleum oil |
| NA 1325 | 4.1 | Fusee (railway or highway) |
| NA 1350 | 9 | Sulfur, domestic |
| NA 1361 | 4.2 | Charcoal briquettes, shell, screenings, wood, etc. |
| NA 1365 | 9 | Cotton |
| NA 1556 | 6.1 | Ethyldichloroarsine |
| NA 1613 | 6.1 | Hydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide |
| NA 1693 | 6.1 | Tear gas devices with more than 2 percent tear gas substances, by mass |
| NA 1759 | 8 | Ferrous chloride, solid |
| NA 1760 | 8 | Chemical kit/Compounds, cleaning liquid (corrosive) Ferrous chloride, solution |
| NA 1911 | 2.1 | Diborane mixtures |
| NA 1954 | 2.1 | Refrigerant gases, n.o.s. or Dispersant gases, n.o.s. |
| NA 1955 | 2.3 | Organic phosphate, with compressed gas or Organic phosphorus compound, mixed with compressed gas |
| NA 1961 | 2.1 | Ethane-Propane mixture, refrigerated liquid |
| NA 1967 | 2.3 | Parathion and compressed gas mixture |
| NA 1987 | 3 | Denatured alcohol |
| NA 1993 | COMB LIQ | Combustible liquid, n.o.s. |
| NA 1999 | 3 | Asphalt, at or above its flash point |
| NA 2212 | 9 | Asbestos |
| NA 2448 | 9 | Molten sulfur |
| NA 2742 | 6.1 | Isobutyl chloroformate |
| NA 2810 | 6.1 | Compounds, tree killing, liquid or Compounds, weed killing, liquid |
| NA 2845 | 6.1 | Ethyl phosphonous dichloride, anhydrous/Methyl phosphonous dichloride |
| NA 2927 | 2.1 | Ethyl phosphor ODI chloridate |
| NA 3077 | 9 | Hazardous waste, solid, n.o.s. |
| NA 3082 | 9 | Other regulated substances, liquid, n.o.s. |
| NA 3178 | 4.1 | Smokeless powder for small arms (100 pounds or less) |
| NA 3334 | 9 | Self-defense spray, non-pressurized |
| NA 3356 | 9 | Oxygen generator, chemical, spent |
| NA 8000 | 9 | Consumer Commodity |
| NA 9035 | 2.3 | Gas Identification Set |
| NA 9191 | 5.1, 6.1 | Chlorine dioxide, hydrate, frozen |
| NA 9202 | 2.1, 2.3 | Carbon monoxide, refrigerated liquid (cryogenic liquid) |
| NA 9206 | 6.1, 8 | Methyl phosphonic dichloride |
| NA 9259 | (9) | (NA No. no longer in use) |
| NA 9260 | 9 | Aluminum, molten |
| NA 9263 | 6.1, 8 | Chloro Pivaloyl chloride |
| NA 9264 | 6.1 | 3,5-Dichloro-2,4,6-trichloropyridine |
| NA 9269 | 6.1 | Trimethoxysilane |
| NA 9279 | 2.1 | Hydrogen absorbed in metal hydride |