Potassium nitrite
For Potassium nitrite, carrier is USPS; restriction type is restricted; scope is domestic mail (air and surface); conditions is Hazard class 5.1, UN1488, packing group II; domestic mail air: 5A; domestic mail surface: 5A, recorded from its source on 2026-08-10.
- Item category
- Potassium nitrite verified
- Carrier
- USPS our reading
- Restriction type
- restricted our reading
- Scope
- domestic mail (air and surface) our reading
- Conditions
- Hazard class 5.1, UN1488, packing group II; domestic mail air: 5A; domestic mail surface: 5A verified
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.
What the source says
Potassium nitrite 5.1 UN1488 II 5A 5A
— pe.usps.com, retrieved 2026-08-10
Source
- pe.usps.comhttps://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf