# Class 9—Assignment of packing group.

- **operation:** document
- **citation:** 49 CFR 173.141
- **title:** Class 9—Assignment of packing group.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** The packing group of a Class 9 material is as indicated in column 5 of the § 172.101 table.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-173-141.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-173-141.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-173-141
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-173.141
**body:**

The packing group of a Class 9 material is as indicated in column 5 of the § 172.101 table.
- **truncated:** false
- **body characters:** 91