---
title: "Can you mix bleach and hydrogen peroxide?"
description: "Bleach and hydrogen peroxide: no — it damages something or fails. What actually happens, and what to do instead."
url: https://atoneplace.net/can-you-mix/bleach-and-hydrogen-peroxide/
site: "At One Place"
---

# Can you mix bleach and hydrogen peroxide?

**Bleach and Hydrogen peroxide: No — it damages something or fails**

No — it is exothermic and destroys both, and can spray hot liquid.

## What actually happens

The two oxidisers react to release oxygen rapidly, generating heat and pressure. In a closed bottle that means a burst container; in an open one it means hot spray. The reaction also consumes both products, so whatever cleaning either would have done is lost. This one is less lethal than the gas-producing combinations and more likely to injure by heat and splash.

## What to do instead

They are both effective disinfectants on their own and neither is improved by the other.

## Cleaning products

| Combination | Verdict | Why |
| --- | --- | --- |
| Bleach and ammonia | Toxic gas | No. This is the classic household poisoning and it produces chloramine gas. |
| Bleach and vinegar | Toxic gas | No. Any acid plus bleach releases chlorine gas. |
| Baking soda and vinegar | Pointless | Safe, dramatic, and it leaves you with salt water. |
| Bleach and toilet cleaner | Toxic gas | No. Most toilet cleaners are acidic, so this is the bleach-and-acid reaction. |
| Bleach and rubbing alcohol | Toxic gas | No. It produces chloroform and other chlorinated compounds. |
| Hydrogen peroxide and vinegar | Do not | No — mixed in a bottle it forms peracetic acid, which is corrosive. |
| One drain cleaner and a different drain cleaner | Toxic gas | No. Drain cleaners come in strongly acidic and strongly caustic types, and combining them is violent. |
| Vinegar and castile soap | Pointless | Safe, and it curdles into a white mess that is worse than either. |
| Vinegar and ammonia | Pointless | Not dangerous, and they cancel each other out. |

## Common questions

### Can you mix bleach and hydrogen peroxide?

No — it damages something or fails. No — it is exothermic and destroys both, and can spray hot liquid.

### What happens if you do?

The two oxidisers react to release oxygen rapidly, generating heat and pressure. In a closed bottle that means a burst container; in an open one it means hot spray. The reaction also consumes both products, so whatever cleaning either would have done is lost. This one is less lethal than the gas-producing combinations and more likely to injure by heat and splash.

### What should I do instead?

They are both effective disinfectants on their own and neither is improved by the other.

## Related pages

- [Bleach and ammonia](https://atoneplace.net/can-you-mix/bleach-and-ammonia/)
- [Bleach and vinegar](https://atoneplace.net/can-you-mix/bleach-and-vinegar/)
- [Baking soda and vinegar](https://atoneplace.net/can-you-mix/baking-soda-and-vinegar/)
- [Bleach and toilet cleaner](https://atoneplace.net/can-you-mix/bleach-and-toilet-cleaner/)
- [Bleach and rubbing alcohol](https://atoneplace.net/can-you-mix/bleach-and-rubbing-alcohol/)
- [Hydrogen peroxide and vinegar](https://atoneplace.net/can-you-mix/hydrogen-peroxide-and-vinegar/)
- [Bleach and ammonia](https://atoneplace.net/can-you-mix/bleach-and-ammonia/)
- [Bleach and vinegar](https://atoneplace.net/can-you-mix/bleach-and-vinegar/)
- [Bleach and toilet cleaner](https://atoneplace.net/can-you-mix/bleach-and-toilet-cleaner/)
- [Bleach and rubbing alcohol](https://atoneplace.net/can-you-mix/bleach-and-rubbing-alcohol/)
- [Hazard symbols](https://atoneplace.net/symbol/)

## Sources

- US Environmental Protection Agency — EPA (https://www.epa.gov/) [Public domain (US Government)]