| 4 | 46 Level DOT Code |
| 6 | Airline Tariff 6D |
| 9 | Title 49, Code of Federal Regulations (CFR) |
| A | International Civil Aviation Organization (ICAO) Code |
| B | Uniform Fire Code (UFC) |
| C | Storage Compatibility Group |
| D | Hazardous Materials ID, DOT |
| E | Endorsement |
| F | Air Force Joint Manual 24-204 |
| I | Intergovernmental Maritime Organization (IMO) Code |
| R | Bureau of Explosives (BOE) 6000 Tariff |
| T | International Air Transport Association Dangerous Goods Code List |
| U | United Nations |
| W | Workplace Hazardous Material Information (WHMIS) Classification System |
| X | Hazard Class or Division |