Postal Explorer > Publication 52 - Hazardous, Restricted, and Perishable Mail > Appendix C USPS Packaging Instructions for Mailable Hazardous Materials > USPS Packaging Instruction 6A

USPS Packaging Instruction 6A

Toxic Substances

A Division 6.1 toxic substance that qualifies as an ORM-D material is permitted in the domestic mail via air or surface transportation when all applicable requirements in 346 are met.

Proper Shipping Name

• Consumer Commodity.

ID Number

• Various (see Appendix A).

Mailability

• International Mail: Prohibited.

• Domestic Mail: Permitted via air transportation (Express Mail, Priority Mail, and First-Class Mail) or surface transportation sent as Standard Mail or Parcel Post.

Required Packaging

Primary Receptacle

• The primary container must be of sufficient strength and have a secure method of closure.

• The capacity of the primary receptacle(s) per mailpiece must not exceed 8 ounces.

Absorbent and Cushioning Material

• Enough absorbent and cushioning material must surround the primary receptacle to prevent breakage and absorb all potential leakage.

Outer Shipping Container

• Strong outer packaging that is capable of firmly and securely holding the primary receptacle and cushioning material is required.

• The inner receptacle and cushioning material must fit snugly within the outer packaging.

Marking

• For air transportation, each mailpiece must be clearly marked on the address side with "Consumer Commodity ORM-D AIR."

• For surface transportation, each mailpiece must be clearly marked on the address side with "Surface Only" or "Surface Mail Only" and "Consumer Commodity ORM-D."

• A complete return address and delivery address must be used.

Documentation

• For air transportation, a mailable material must have a properly completed shipper's declaration for dangerous goods that is prepared in triplicate and affixed to the outside of the mailpiece.