# Organophosphoruspesticides,liquid, flammable, toxic, flashpoint less than 23° C · USPS — Mailing and air-carriage restrictions by item category

For Organophosphoruspesticides,liquid, flammable, toxic, flashpoint less than 23° C · USPS, item category is Organophosphoruspesticides,liquid, flammable, toxic, flashpoint less than 23° C; carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 3, UN2784, packing group I, II; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-30.

- **Item category:** Organophosphoruspesticides,liquid, flammable, toxic, flashpoint less than 23° C _(verified: appears in the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** domestic mail (air and surface) _(our reading, not quoted from the source)_
- **Conditions:** Hazard class 3, UN2784, packing group I, II; domestic mail air: Prohibited; domestic mail surface: Prohibited

## What the source says

> Organophosphoruspesticides,liquid, flammable, toxic, flashpoint less than 23° C 3 UN2784 I, II Prohibited Prohibited

## Source

- https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf

Last verified: 2026-08-30. Review by: 2027-08-30.
Part of [Mailing and air-carriage restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).