Reference Source

Organometallic substance, solid, self heating · USPS

What is the restriction type for Organometallic substance, solid, self heating · USPS?

For Organometallic substance, solid, self heating, carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 4.2, UN3400, packing group II, III; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-10.

Organometallic substance, solid, self heating 4.2 UN3400 II, III Prohibited Prohibited

— pe.usps.com, retrieved 2026-08-10

Item or substance
Organometallic substance, solid, self heating verified
Carrier
USPS our reading
Restriction type
prohibited our reading
Scope
domestic mail (air and surface) our reading
Conditions
Hazard class 4.2, UN3400, packing group II, III; domestic mail air: Prohibited; domestic mail surface: Prohibited
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.