Reference Source

Sodium carbonate peroxyhydrate · USPS

What is the restriction type for Sodium carbonate peroxyhydrate · USPS?

For Sodium carbonate peroxyhydrate, carrier is USPS; restriction type is restricted; scope is domestic mail (air and surface); conditions is Hazard class 5.1, UN3378, packing group II, III; domestic mail air: 5A; domestic mail surface: 5A, recorded from its source on 2026-08-10.

Sodium carbonate peroxyhydrate 5.1 UN3378 II, III 5A 5A

— pe.usps.com, retrieved 2026-08-10

Item or substance
Sodium carbonate peroxyhydrate verified
Carrier
USPS our reading
Restriction type
restricted our reading
Scope
domestic mail (air and surface) our reading
Conditions
Hazard class 5.1, UN3378, packing group II, III; domestic mail air: 5A; domestic mail surface: 5A
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.