# Corrosive liquid mixtures qualifying as Limited Quantity — domestic — Postal shipping restrictions by item category

For Corrosive liquid mixtures qualifying as Limited Quantity, item category is Corrosive liquid mixtures qualifying as Limited Quantity — domestic; carrier is USPS; restriction type is restricted; scope is domestic mail via air or surface transportation; conditions is Mailable if 1 pint or less and contains 15% or less corrosive material; must meet Limited Quantity requirements, recorded from its source on 2026-08-04.

- **Item category:** Corrosive liquid mixtures qualifying as Limited Quantity — domestic _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail via air or surface transportation _(our reading, not quoted from the source)_
- **Conditions:** Mailable if 1 pint or less and contains 15% or less corrosive material; must meet Limited Quantity requirements _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Domestic Mail: Corrosive materials may be mailable if they meet Limited Quantity requirements for air or surface transportation

## Source

- https://pe.usps.com/text/pub52/pub52c3_027.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).