• § 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.