# Corrosive substances — Postal shipping restrictions by item category

For Corrosive substances, carrier is Royal Mail Wholesale (Access customers); restriction type is prohibited; scope is UK; conditions is Substances which can cause severe damage to living tissue, other freight or transport by chemical action, including aluminium chloride, caustic soda, corrosive cleaning fluid, dyes, acids, corrosive paint and rust removers, mercury and gallium metal, recorded from its source on 2026-08-10.

- **Item category:** Corrosive substances _(verified: appears in the quote below)_
- **Carrier:** Royal Mail Wholesale (Access customers) _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** UK _(our reading, not quoted from the source)_
- **Conditions:** Substances which can cause severe damage to living tissue, other freight or transport by chemical action, including aluminium chloride, caustic soda, corrosive cleaning fluid, dyes, acids, corrosive paint and rust removers, mercury and gallium metal. _(verified: appears in the quote below)_

## What the source says

> Substances which can cause severe damage to living tissue, other freight or transport by its chemical action are prohibited including aluminium chloride, caustic soda, corrosive cleaning fluid, dyes, acids, corrosive paint and rust removers, mercury and gallium metal.

## Source

- https://www.royalmailwholesale.com/mint-project/uploads/233157117.pdf

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).