---
type: restriction
id: usps-nonhazardous-liquids
asset: shipping-restrictions-by-class
title: "nonhazardous liquids — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c4_018.htm
source_quote: "Liquids that are nonhazardous (i.e., not regulated as hazardous materials) are mailable provided they are properly packaged as specified in 451.3"
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "nonhazardous liquids"
carrier: "USPS"
restriction_type: "allowed"
scope: "domestic mail"
conditions: "Liquids that are nonhazardous are mailable provided they are properly packaged"
verified: false
unverified_fields: carrier, item_category
---
**Item category:** nonhazardous liquids

**Carrier:** USPS

**Restriction type:** allowed

**Scope:** domestic mail

**Conditions:** Liquids that are nonhazardous are mailable provided they are properly packaged

> Liquids that are nonhazardous (i.e., not regulated as hazardous materials) are mailable provided they are properly packaged as specified in 451.3

Source: <https://pe.usps.com/text/pub52/pub52c4_018.htm>