Hazardous materials communication rules cited by AF transport/packaging pubs. 114 sections, full current text (eCFR edition 2026-07-09), each cross-linked to the AF pubs that cite it.
| Section | Title | AF citations |
|---|---|---|
| 172.1 | Purpose and scope. | — |
| 172.3 | Applicability. | — |
| 172.101 | Purpose and use of the hazardous materials table. | 3 × 2 pubs |
| 172.102 | Special provisions. | — |
| 172.200 | Applicability. | — |
| 172.201 | Preparation and retention of shipping papers. | — |
| 172.202 | Description of hazardous material on shipping papers. | 3 × 1 pubs |
| 172.203 | Additional description requirements. | — |
| 172.204 | Shipper's certification. | 1 × 1 pubs |
| 172.205 | Hazardous waste manifest. | — |
| 172.300 | Applicability. | — |
| 172.301 | General marking requirements for non-bulk packagings. | — |
| 172.302 | General marking requirements for bulk packagings. | — |
| 172.303 | Prohibited marking. | — |
| 172.304 | Marking requirements. | — |
| 172.308 | Authorized abbreviations. | — |
| 172.310 | Class 7 (radioactive) materials. | — |
| 172.312 | Liquid hazardous materials in non-bulk packagings. | — |
| 172.313 | Poisonous hazardous materials. | — |
| 172.315 | Limited quantities. | — |
| 172.317 | KEEP AWAY FROM HEAT handling mark. | — |
| 172.320 | Explosive hazardous materials. | — |
| 172.322 | Marine pollutants. | — |
| 172.323 | Infectious substances. | — |
| 172.324 | Hazardous substances in non-bulk packagings. | — |
| 172.325 | Elevated temperature materials. | — |
| 172.326 | Portable tanks. | — |
| 172.327 | Petroleum sour crude oil in bulk packaging. | — |
| 172.328 | Cargo tanks. | — |
| 172.330 | Tank cars and multi-unit tank car tanks. | — |
| 172.331 | Bulk packagings other than portable tanks, cargo tanks, tank cars and multi-unit tank car tanks. | — |
| 172.332 | Identification number markings. | — |
| 172.334 | Identification numbers; prohibited display. | — |
| 172.336 | Identification numbers; special provisions. | — |
| 172.338 | Replacement of identification numbers. | — |
| 172.400 | General labeling requirements. | — |
| 172.400a | Exceptions from labeling. | — |
| 172.401 | Prohibited labeling. | — |
| 172.402 | Additional labeling requirements. | — |
| 172.403 | Class 7 (radioactive) material. | 3 × 1 pubs |
| 172.404 | Labels for mixed and consolidated packaging. | — |
| 172.405 | Authorized label modifications. | — |
| 172.406 | Placement of labels. | — |
| 172.407 | Label specifications. | — |
| 172.411 | EXPLOSIVE 1.1, 1.2, 1.3, 1.4, 1.5 and 1.6 labels, and EXPLOSIVE Subsidiary label. | — |
| 172.415 | NON-FLAMMABLE GAS label. | — |
| 172.416 | POISON GAS label. | — |
| 172.417 | FLAMMABLE GAS label. | — |
| 172.419 | FLAMMABLE LIQUID label. | — |
| 172.420 | FLAMMABLE SOLID label. | — |
| 172.422 | SPONTANEOUSLY COMBUSTIBLE label. | — |
| 172.423 | DANGEROUS WHEN WET label. | — |
| 172.426 | OXIDIZER label. | — |
| 172.427 | ORGANIC PEROXIDE label. | — |
| 172.429 | POISON INHALATION HAZARD label. | — |
| 172.430 | POISON label. | — |
| 172.432 | INFECTIOUS SUBSTANCE label. | — |
| 172.436 | RADIOACTIVE WHITE-I label. | — |
| 172.438 | RADIOACTIVE YELLOW-II label. | — |
| 172.440 | RADIOACTIVE YELLOW-III label. | — |
| 172.441 | FISSILE label. | — |
| 172.442 | CORROSIVE label. | — |
| 172.446 | CLASS 9 label. | — |
| 172.447 | LITHIUM BATTERY label. | — |
| 172.448 | CARGO AIRCRAFT ONLY label. | — |
| 172.450 | EMPTY label. | — |
| 172.500 | Applicability of placarding requirements. | 14 × 1 pubs |
| 172.502 | Prohibited and permissive placarding. | — |
| 172.503 | Identification number display on placards. | — |
| 172.504 | General placarding requirements. | 20 × 2 pubs |
| 172.505 | Placarding for subsidiary hazards. | — |
| 172.506 | Providing and affixing placards: Highway. | — |
| 172.507 | Special placarding provisions: Highway. | — |
| 172.508 | Placarding and affixing placards: Rail. | — |
| 172.510 | Special placarding provisions: Rail. | — |
| 172.512 | Freight containers and aircraft unit load devices. | — |
| 172.514 | Bulk packagings. | — |
| 172.516 | Visibility and display of placards. | — |
| 172.519 | General specifications for placards. | — |
| 172.521 | DANGEROUS placard. | — |
| 172.522 | EXPLOSIVES 1.1, EXPLOSIVES 1.2 and EXPLOSIVES 1.3 placards. | — |
| 172.523 | EXPLOSIVES 1.4 placard. | — |
| 172.524 | EXPLOSIVES 1.5 placard. | — |
| 172.525 | EXPLOSIVES 1.6 placard. | — |
| 172.527 | Background requirements for certain placards. | — |
| 172.528 | NON-FLAMMABLE GAS placard. | — |
| 172.530 | OXYGEN placard. | — |
| 172.532 | FLAMMABLE GAS placard. | — |
| 172.540 | POISON GAS placard. | — |
| 172.542 | FLAMMABLE placard. | — |
| 172.544 | COMBUSTIBLE placard. | — |
| 172.546 | FLAMMABLE SOLID placard. | — |
| 172.547 | SPONTANEOUSLY COMBUSTIBLE placard. | — |
| 172.548 | DANGEROUS WHEN WET placard. | — |
| 172.550 | OXIDIZER placard. | — |
| 172.552 | ORGANIC PEROXIDE placard. | — |
| 172.554 | POISON placard. | — |
| 172.555 | POISON INHALATION HAZARD placard. | — |
| 172.556 | RADIOACTIVE placard. | — |
| 172.558 | CORROSIVE placard. | — |
| 172.560 | CLASS 9 placard. | — |
| 172.600 | Applicability and general requirements. | — |
| 172.602 | Emergency response information. | — |
| 172.604 | Emergency response telephone number. | — |
| 172.606 | Carrier information contact. | — |
| 172.700 | Purpose and scope. | 1 × 1 pubs |
| 172.701 | Federal-State relationship. | — |
| 172.702 | Applicability and responsibility for training and testing. | — |
| 172.704 | Training requirements. | 5 × 2 pubs |
| 172.800 | Purpose and applicability. | — |
| 172.802 | Components of a security plan. | — |
| 172.804 | Relationship to other Federal requirements. | — |
| 172.820 | Additional planning requirements for transportation by rail. | — |
| 172.822 | Limitation on actions by states, local governments, and Indian tribes. | — |
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