U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 23, 2025

All TitlesTitle 49Chapter IPart 173Subpart D - Subpart D—Definitions Classification, Packing Group Assignments and Exceptions for Hazardous Materials Other Than Class 1 and Class 7
§ 173.115 - Class 2, Divisions 2.1, 2.2, and 2.3—Definitions.
§ 173.116 - Class 2—Assignment of hazard zone.
§§ 173.117-173.119 - §[Reserved]
§ 173.120 - Class 3—Definitions.
§ 173.121 - Class 3—Assignment of packing group.
§ 173.124 - Class 4, Divisions 4.1, 4.2 and 4.3—Definitions.
§ 173.125 - Class 4—Assignment of packing group.
§ 173.127 - Class 5, Division 5.1—Definition and assignment of packing groups.
§ 173.128 - Class 5, Division 5.2—Definitions and types.
§ 173.129 - [Reserved]
§ 173.132 - Class 6, Division 6.1—Definitions.
§ 173.133 - Assignment of packing group and hazard zones for Division 6.1 materials.
§ 173.134 - Class 6, Division 6.2—Definitions and exceptions.
§ 173.136 - Class 8—Definitions.
§ 173.137 - Class 8—Assignment of packing group.
§ 173.140 - Class 9—Definitions.
§ 173.141 - Class 9—Assignment of packing group.
§ 173.144-173.145 - [Reserved]
§ 173.150 - Exceptions for Class 3 (flammable and combustible liquids).
§ 173.151 - Exceptions for Class 4.
§ 173.152 - Exceptions for Division 5.1 (oxidizers) and Division 5.2 (organic peroxides).
§ 173.153 - Exceptions for Division 6.1 (poisonous materials).
§ 173.154 - Exceptions for Class 8 (corrosive materials).
§ 173.155 - Exceptions for Class 9 (miscellaneous hazardous materials).
§ 173.156 - Exceptions for limited quantity materials.
§ 173.157 - Reverse logistics—General requirements and exceptions for reverse logistics.
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