Code of Federal Regulations > Title 49 > Chapter I > Part 171 > Subpart A - Subpart A—Applicability, General Requirements, and North American Shipments

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

§ 171.1 - Applicability of Hazardous Materials Regulations (HMR) to persons and functions.

§ 171.2 - General requirements.

§ 171.3 - Hazardous waste.

§ 171.4 - Marine pollutants.

§ 171.6 - Control numbers under the Paperwork Reduction Act.

§ 171.7 - Reference material.

§ 171.8 - Definitions and abbreviations.

§ 171.9 - Rules of construction.

§ 171.10 - Units of measure.

§ 171.11 - [Reserved]

§ 171.12 - North American Shipments.

§ 171.12a - [Reserved]

§ 171.14 - [Reserved]