# Amines, liquid, corrosive, n.o.s. or Polyamines, liquid, corrosive, n.o.s. · USPS · II, III — Mailing and air-carriage restrictions by item category For Amines, liquid, corrosive, n.o.s. or Polyamines, liquid, corrosive, n.o.s. · USPS · II, III, item category is Amines, liquid, corrosive, n.o.s. or Polyamines, liquid, corrosive, n.o.s; carrier is USPS; dot packing group is II, III; restriction type is restricted; scope is domestic mail (air and surface), recorded from its source on 2026-08-29. - **Item category:** Amines, liquid, corrosive, n.o.s. or Polyamines, liquid, corrosive, n.o.s. _(verified: appears in the quote below)_ - **Carrier:** USPS _(our reading, not quoted from the source)_ - **DOT packing group:** II, III _(verified: appears in the quote below)_ - **Restriction type:** restricted _(our reading, not quoted from the source)_ - **Scope:** domestic mail (air and surface) _(our reading, not quoted from the source)_ - **Conditions:** Hazard class 8, UN2735, packing group II, III; domestic mail air: 8A; domestic mail surface: 8A ## What the source says > Amines, liquid, corrosive, n.o.s. or Polyamines, liquid, corrosive, n.o.s. 8 UN2735 II, III 8A 8A ## Source - https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf Last verified: 2026-08-29. Review by: 2027-08-29. Part of [Mailing and air-carriage restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).