USPS Packaging Instruction 5A

Oxidizing Substances, Organic Peroxides

An oxidizing substance or an organic peroxide that can qualify as a consumer commodity or ORM-D material is permitted in the domestic mail, provided that all applicable requirements in 345 are met.

Proper Shipping Name

ID Number


Required Packaging

Primary Receptacle
Absorbent and Cushioning Material
Secondary Packaging
Outer Packaging