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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 are not covered by UN numbers as a hazardous material. In a couple of instances NA numbers provide an alternative description than the equivalent UN number.
Contents
| NA number | Class | Material | Varies from UN Number? | Notes |
|---|---|---|---|---|
| NA 0027 | 4.1 | Black powder for small arms | No | |
| NA 0124 | 1.1D | Jet perforating guns, charged oil well, with detonator | No | |
| NA 0276 | 1.4C | Model rocket motor | No | |
| NA 0323 | 1.4S | Model rocket motor | No | |
| NA 0331 | 1.5D | Ammonium nitrate-fuel oil (ANFO) mixture containing only prilled ammonium nitrate and fuel oil | No | |
| NA 0337 | 1.4S | Toy Caps | No | |
| NA 0494 | 1.4D | Jet perforating guns, charged oil well, with detonator | No | |
| NA 1057 | 3 | Lighters, non-pressurized, containing flammable liquid, | Yes | |
| NA 1270 | 3 | Petroleum oil | No | |
| NA 1325 | 4.1 | Fusee (railway or highway) | Yes | |
| NA 1350 | 9 | Sulfur | No | |
| NA 1361 | 4.2 | Charcoal briquettes, shell, screenings, wood, etc. | No | |
| NA 1365 | 9 | Cotton | Yes | |
| NA 1556 | 6.1 | Methyldichloroarsine | Yes | |
| NA 1613 | 6.1 | Hydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide | No | |
| NA 1693 | 6.1 | Tear gas devices with more than 2 percent tear gas substances, by mass | Yes | |
| NA 1759 | 8 | Ferrous chloride, solid | Yes | |
| NA 1760 | 8 | Chemical kit | Yes | |
| 8 | Compounds, cleaning liquid | |||
| 8 | Compounds, tree killing, liquid or Compounds, weed killing, liquid | |||
| 8 | Ferrous chloride, solution | |||
| NA 1911 | 2.1 | Diborane mixtures | Yes | |
| NA 1954 | 2.1 | Refrigerant gases, n.o.s. [a] or Dispersant gases, n.o.s. [a] | Yes | |
| NA 1955 | 2.3 | Organic phosphate, mixed with compressed gas or Organic phosphate compound, mixed with compressed gas or Organic phosphorus compound, mixed with compressed gas | Yes | |
| NA 1961 | 2.1 | Ethane-Propane mixture, refrigerated liquid | No | |
| NA 1967 | 2.3 | Parathion and compressed gas mixture | Yes | |
| NA 1987 | 3 | Denatured alcohol | Yes | |
| NA 1993 | Combustible liquid | Combustible liquid, n.o.s. [a] | yes | |
| 3 | Compounds, cleaning liquid | |||
| 3 | Compounds, tree killing, liquid or Compounds, weed killing, liquid | |||
| 3 | Diesel fuel | |||
| 3 | Fuel oil (No. 1, 2, 4, 5, or 6) | |||
| NA 1999 | 3 | Asphalt, at or above its flash point | No | |
| NA 2212 | 9 | Asbestos | Yes | |
| NA 2448 | 9 | Sulfur, molten | No | |
| NA 2810 | 6.1 | Compounds, tree killing, liquid or Compounds, weed killing, liquid | Yes | |
| NA 2845 | 6.1 | Ethyl phosphonous dichloride, anhydrous pyrophoric liquid | Yes | |
| 6.1 | Methyl phosphonous dichloride, pyrophoric liquid | |||
| NA 2927 | 2.1 | Ethyl phosphonothioic dichloride, anhydrous | Yes | |
| 2.1 | Ethyl phosphorodichloridate | |||
| NA 3077 | 9 | Hazardous waste, solid, n.o.s. [a] | Yes | |
| 9 | Other regulated substances, solid, n.o.s | |||
| NA 3082 | 9 | Hazardous waste, liquid, n.o.s. [a] | No | |
| 9 | Other regulated substances, liquid, n.o.s. [a] | |||
| NA 3178 | 4.1 | Smokeless powder for small arms (100 pounds or less) | No | |
| NA 3334 | 9 | Self-defense spray, non-pressurized | Yes | |
| NA 3356 | 9 | Oxygen generator, chemical, spent | Yes | |
| NA 9035 | 2.3 | Gas identification set | No | |
| NA 9191 | 5.1 | Chlorine dioxide, hydrate, frozen | No | |
| NA 9202 | 2.3 | Carbon monoxide, refrigerated liquid (cryogenic liquid) | No | |
| NA 9206 | 6.1 | Methyl phosphonic dichloride | No | |
| NA 9259 | (9) | Elevated temperature material, liquid, n.o.s. [a] [1] | No | No longer in use |
| NA 9260 | 9 | Aluminum, molten | No | |
| NA 9263 | 6.1 | Chloropivaloyl chloride | No | |
| NA 9264 | 6.1 | 3,5-Dichloro-2,4,6-trifluoropyridine | No | |
| NA 9269 | 6.1 | Trimethoxysilane | No | |
| NA 9279 | 2.1 | Hydrogen absorbed in metal hydride | No |