Hydrogen Peroxide | NIOSH | CDC (2024)

Overview

CAS No. 7722-84-1

Hydrogen Peroxide (H₂O₂) is a colorless liquid with a slightly sharp odor. Hydrogen peroxide can cause irritation to the eyes, nose, skin, and throat. Workers may be harmed from exposure to hydrogen peroxide. The level of exposure depends upon the dose, duration, and work being done.

Hydrogen peroxide is used in many industries. In industry, hydrogen peroxide in higher concentrations is used as a bleach for textiles and paper, as a component of rocket fuels, and for producing foam rubber and organic chemicals. It’s also used in medicinal applications and to bleach clothes and hair. Workers may be exposed to hydrogen peroxide through inhalation or contact with the skin. Examples of workers who may be exposed to hydrogen peroxide include the following:

  • Workers in poultry plants that use it in chemical disinfectants
  • Stylists in beauty salons who use colorant products
  • Hospitals and healthcare workers
  • Factory workers in plants that manufacture foam rubber

NIOSHrecommends that employers use Hierarchy of Controlsto prevent injuries. If you work in an industry that uses hydrogen peroxide, please read chemical labels and the accompanying Safety Data Sheets for hazard information. Visit NIOSH’s page on Managing Chemical Safety in the Workplaceto learn more about controlling chemical workplace exposures.

The following resources provide information about occupational exposure to hydrogen peroxide. Useful search terms for hydrogen peroxide include “high-strength hydrogen peroxide,” “hydrogen dioxide,” “hydrogen peroxide (aqueous),” “hydroperoxide,” and “peroxide.”

NIOSH Chemical Resources

Hydrogen Peroxide | NIOSH | CDC (2024)

FAQs

Why is hydrogen peroxide no longer recommended? ›

Hydrogen peroxide is not an effective treatment because it actually irritates the skin and inhibits wound healing. The advice about using it has changed because new research shows that the irritation it causes is not worth the antiseptic effect.”

What happens when hydrogen peroxide reacts? ›

Hydrogen peroxide decomposes into water and oxygen upon heating or in the presence of numerous substances, particularly salts of such metals as iron, copper, manganese, nickel, or chromium.

How powerful is hydrogen peroxide? ›

Hydrogen peroxide is about 1000 times stronger as an acid than water.

What percent of hydrogen peroxide is effective? ›

Commercially available 3% hydrogen peroxide is a stable and effective disinfectant when used on inanimate surfaces.

Where should you not use hydrogen peroxide? ›

The release of oxygen causes foaming, which helps to remove dead skin and clean the area.This product should not be used to treat deep wounds, animal bites, or serious burns.

What to use instead of hydrogen peroxide? ›

But when it comes to cleaning and disinfecting, there is one hydrogen peroxide substitute that wins, and that is hypochlorous acid.

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