---
type: restriction
id: usps-ethanol-based-flammable-liquids-or-solids
asset: shipping-restrictions-by-class
title: "Ethanol-based flammable liquids or solids — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_022.htm
source_quote: "Flammable liquids or solids containing ethanol (ethyl alcohol) are mailable by domestic air only with prior written authorization."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Ethanol-based flammable liquids or solids"
carrier: "USPS"
restriction_type: "restricted"
scope: "domestic mail via air only"
conditions: "Mailable by domestic air only with prior written authorization from director, Product Classification; quantity and packaging limits apply based on ethanol concentration"
verified: false
unverified_fields: carrier, conditions, item_category
---
**Item category:** Ethanol-based flammable liquids or solids

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** domestic mail via air only

**Conditions:** Mailable by domestic air only with prior written authorization from director, Product Classification; quantity and packaging limits apply based on ethanol concentration

> Flammable liquids or solids containing ethanol (ethyl alcohol) are mailable by domestic air only with prior written authorization.

Source: <https://pe.usps.com/text/pub52/pub52c3_022.htm>