§ 172.1 Purpose and scope.
Current through Sep 25, 2026 · Read all of Part 172
This part lists and classifies those materials which the Department has designated as hazardous materials for purposes of transportation and prescribes the requirements for shipping papers, package marking, labeling, and transport vehicle placarding applicable to the shipment and transportation of those hazardous materials.
[Amdt. 172-29, 41 FR 15997, Apr. 15, 1976, as amended by 66 FR 45379, Aug. 28, 2001]
Interpretation letters (13)
- The Definition of a Hazardous Materials (HAZMAT) Employer as it Relates to the Port of Portland — PHMSA, Aug 9, 2023
- Transport of Category B Patient Samples — PHMSA, Mar 4, 2021
- CGA C-7 Cylinder Label — PHMSA, Oct 1, 2020
- Liquid Nitrogen Truck Refrigeration System — PHMSA, Aug 17, 2020
- Registration — PHMSA, Jun 11, 2019
- Hzardous materials training — PHMSA, May 1, 2019
- Requirements for permanently mounted propane tanks — PHMSA, Sep 20, 2018
- Training requirements — PHMSA, Aug 20, 2018
- The use of enlarged labels in place of placards — PHMSA, Aug 3, 2018
- Inspecting shipments for transportation by aircraft — PHMSA, Jul 20, 2017