Reference Source

Nickel nitrite · USPS

What is the restriction type for Nickel nitrite · USPS?

For Nickel nitrite, carrier is USPS; restriction type is restricted; scope is domestic mail (air and surface); conditions is Hazard class 5.1, UN2726, packing group III; domestic mail air: 5A; domestic mail surface: 5A, recorded from its source on 2026-08-10.

Nickel nitrite 5.1 UN2726 III 5A 5A

— pe.usps.com, retrieved 2026-08-10

Item or substance
Nickel nitrite verified
Carrier
USPS our reading
Restriction type
restricted our reading
Scope
domestic mail (air and surface) our reading
Conditions
Hazard class 5.1, UN2726, packing group 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.