# Oxidising materials and organic peroxides — Postal shipping restrictions by item category

For Oxidising materials and organic peroxides, carrier is Royal Mail Wholesale (Access customers); restriction type is prohibited; scope is UK; conditions is Substances that may cause or contribute to combustion of other substances, e.g. bromides, chlorates, components of fibreglass repair kits, disinfectants, nitrates, permanganates and peroxides, including hair dyes and colourants containing peroxide, recorded from its source on 2026-08-10.

- **Item category:** Oxidising materials and organic peroxides _(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 that may cause or contribute to combustion of other substances, e.g. bromides, chlorates, components of fibreglass repair kits, disinfectants, nitrates, permanganates and peroxides, including hair dyes and colourants containing peroxide. _(verified: appears in the quote below)_

## What the source says

> These are substances such as disinfectants that may cause or contribute to combustion of other substances. They may also be liable to explosive decomposition, react dangerously with other substances and injure health e.g. bromides, chlorates, components of fibreglass repair kits, disinfectants, nitrates, per chlorates, permanganates and peroxides, including hair dyes and colourants containing peroxide.

## 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/).