---
type: restriction
id: usps-toxic-gases-division-2-3
asset: shipping-restrictions-by-class
title: "Toxic gases (Division 2.3) — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_021.htm
source_quote: "Toxic Gases: All Division 2.3 toxic gases are prohibited from mailing."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Toxic gases (Division 2.3)"
carrier: "USPS"
restriction_type: "prohibited"
scope: "all mail"
conditions: "All Division 2.3 toxic gases are prohibited from mailing"
verified: false
unverified_fields: carrier, item_category
---
**Item category:** Toxic gases (Division 2.3)

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** all mail

**Conditions:** All Division 2.3 toxic gases are prohibited from mailing

> Toxic Gases: All Division 2.3 toxic gases are prohibited from mailing.

Source: <https://pe.usps.com/text/pub52/pub52c3_021.htm>