§ 173.140 Class 9—Definitions.
Current through Sep 25, 2026 · Read all of Part 173
For the purposes of this subchapter, miscellaneous hazardous material (Class 9) means a material which presents a hazard during transportation but which does not meet the definition of any other hazard class. This class includes:
(a) Any material which has an anesthetic, noxious or other similar property which could cause extreme annoyance or discomfort to a flight crew member so as to prevent the correct performance of assigned duties; or
(b) Any material that meets the definition in § 171.8 of this subchapter for an elevated temperature material, a hazardous substance, a hazardous waste, or a marine pollutant.
[Amdt. 173-224, 57 FR 45463, Oct. 1, 1992, as amended by Amdt. 173-231, 57 FR 52939, Nov. 5, 1992; Amdt. 173-233, 58 FR 33305, June 16, 1993]
Interpretation letters (12)
- Marine pollutants. — PHMSA, Dec 12, 2018
- Use of Sift-proof Bulk Bins for UN3088 — PHMSA, Aug 31, 2011
- Clarification of Hazardous Substances in a Mixture and RQ — PHMSA, Dec 6, 2010
- Limited Quantity Radioactive Material; Class 9 — PHMSA, Mar 31, 2006
- Lead Compounds as a Marine Pollutant — PHMSA, Nov 21, 2005
- Definition of Class 9 — PHMSA, Aug 23, 2005
- 10% Formaldehyde Solutions — PHMSA, May 11, 2004
- Classification of Fragrance Oils — PHMSA, Dec 12, 2003
- Biological Samples Preserved with Formalin — PHMSA, Apr 10, 2003
- Selection of Proper Shipping Name — PHMSA, Oct 16, 2001