Reference Source

Acetyl acetone peroxide with more than 9 percent by mass active oxygen · USPS

What is the restriction type for Acetyl acetone peroxide with more than 9 percent by mass active oxygen · USPS?

For Acetyl acetone peroxide with more than 9 percent by mass active oxygen, carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Listed as Forbidden in the Pub 52 Appendix A mailability guide; Prohibited in domestic mail by air and by surface, recorded from its source on 2026-08-10.

Acetyl acetone peroxide with more than 9 percent by mass active oxygen Forbidden Prohibited Prohibited Prohibited Prohibited

— pe.usps.com, retrieved 2026-08-10

Item or substance
Acetyl acetone peroxide with more than 9 percent by mass active oxygen verified
Carrier
USPS our reading
Restriction type
prohibited our reading
Scope
domestic mail (air and surface) our reading
Conditions
Listed as Forbidden in the Pub 52 Appendix A mailability guide; Prohibited in domestic mail by air and by surface.
Sourcepe.usps.com
Verified
Review by
DatasetWhat can be mailed: USPS hazardous materials, plus item rules for post and couriers

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.