Polyhalogenated biphenyls, solid or Halogenated monomethyldiphenyl-methanes, solid or Polyhalogenated terphenyls, solid
HMT 15 June 2026Polyhalogenated biphenyls, solid or Halogenated monomethyldiphenyl-methanes, solid or Polyhalogenated terphenyls, solid
A polyhalogenated compound (PHC) is any compound with multiple substitutions of halogens. They are of particular interest and importance because they bioaccumulate in humans, and comprise a superset of which has many toxic and carcinogenic industrial chemicals as members. PBDEs, PCBs, dioxins (PCDDs) and PFCs are all polyhalogenated compounds. They are generally non-miscible in organic solvents or water, but miscible in some hydrocarbons from which they often derive Wikipedia
| Emergency Response Guide No. 171 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard class9Miscellaneous hazardous materials |
(4) Identification number |
(5) Packing Group |
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(6) Labels |
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(7) Special Provisions (§172.102)
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| IB8 | |
|---|---|
| IP2 | |
| IP4 | |
| T3 | |
| TP33 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | 155 | see 49 CFR §173.155 |
|---|---|---|
| (8B) Non-bulk | 204 | see 49 CFR §173.204 |
| (8C) Bulk | 241 | see 49 CFR §173.241 |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | 100 kg |
|---|---|
| (9B) Cargo aircraft only | 200 kg |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (10B) Other |
Segregation chart for load, transport, and storage
This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.
Keine Kompatibilitätsangaben für Klasse 9 in 49 CFR §177.848 enthalten.
Scope & sources (important)Click to show CFR references
This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):
- §177.834 - General requirements
- §177.835 - Class 1 materials
- §177.837 - Class 3 materials
- §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
- §177.839 - Class 8 (corrosive) materials
- §177.840 - Class 2 (gases) materials
- §177.841 - Division 6.1 and Division 2.3 materials
- §177.842 - Class 7 (radioactive) material
- §177.843 - Contamination of vehicles
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|---|---|
| UN 3151 | Polyhalogenated biphenyls, liquid or Halogenated monomethyldiphenyl-methanes, liquid or Polyhalogenated terphenyls, liquid | 9 |