Reference Source

Nitric acid (UN2031, UN2032) · USPS

What is the restriction type for Nitric acid (UN2031, UN2032) · USPS?

For Nitric acid (UN2031, UN2032), carrier is USPS; restriction type is prohibited; scope is all mail; conditions is Nonmailable corrosive, recorded from its source on 2026-08-04.

Nitric Acid (UN2031, UN2032).

— pe.usps.com, retrieved 2026-08-04

Item or substance
Nitric acid (UN2031, UN2032) verified
Carrier
USPS our reading
Restriction type
prohibited our reading
Scope
all mail our reading
Conditions
Nonmailable corrosive
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.