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Packing Groups are indicated in Column 5 of the Hazardous Materials Table (HMT), and often more than one packing group will be indicated for a given material.

Scope

It is the shipper’s/offeror’s responsibility to determine which packing group applies to the material being shipped.

Regulatory citations

Key definitions

  • None

Summary of requirements

In addition to the hazard class of a material, the degree of hazard is also indicated by the assignment of packing groups:

  • Packing Group I — Great Danger
  • Packing Group II — Medium Danger
  • Packing Group III — Minor Danger

There are no packing groups assigned to Class 1, Class 2, Class 7, and some Division 4.1, Division 5.1, Division 5.2, Division 6.2, Class 8, and most Class 9 materials.

The criteria for packing group assignments are found in Part 173 as indicated below:

Hazard classSection
Class 3173.121
Class 4173.125
Division 5.1173.127
Division 5.2173.129
Division 6.1 (including hazard zones)173.133
Class 8173.137
Class 9173.141
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['Hazardous Materials Table']
['Packing group assignment - Hazmat']
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