# Acetone (UN1090), Benzene (UN1114), Hexane(s) (UN1208) — Postal shipping restrictions by item category

For Acetone (UN1090), Benzene (UN1114), Hexane(s) (UN1208), carrier is USPS; restriction type is prohibited; scope is all mail; conditions is Nonmailable unless diluted with less flammable or nonflammable materials sufficient to raise flashpoint to 20 F or higher, recorded from its source on 2026-08-04.

- **Item category:** Acetone (UN1090), Benzene (UN1114), Hexane(s) (UN1208) _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** all mail _(our reading, not quoted from the source)_
- **Conditions:** Nonmailable unless diluted with less flammable or nonflammable materials sufficient to raise flashpoint to 20 F or higher _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Acetone (UN1090) normally has a flashpoint of 0° F, Benzene (UN1114) normally has a flashpoint of 12° F, and Hexane(s) (UN1208) normally have flashpoints in the vicinity of -15° F. All are nonmailable unless diluted

## Source

- https://pe.usps.com/text/pub52/pub52c3_022.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/).