1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum

Hydrogen Peroxide Shelf Life

By

Hydrogen peroxide is a weak acid with strong oxidizing properties.

Hydrogen peroxide is a weak acid with strong oxidizing properties.

Ben Mills
Top Related Searches
  • hydrogen peroxide
  • shelf life
  • gp
  • If you've ever poured hydrogen peroxide solution onto a cut and didn't experience the expected fizz, it's likely your bottle of hydrogen peroxide has become a bottle of plain water. The 3% hydrogen peroxide solution you can buy for use as a disinfectant typically has a shelf life of at least a year if the bottle is unopened, but only lasts 30-45 days once the seal has been broken. As soon as you expose the peroxide solution to air, it starts to react to form water. Also, if you contaminate the bottle (e.g., by dipping a swab or finger into the bottle), you can expect the effectiveness of the remaining liquid to be compromised.

    So, if you have a bottle of hydrogen peroxide that has been sitting in your medicine cabinet for a few years, it would be a good idea to replace it. If you've opened the bottle at any point, its activity is long-gone. Good to know, right?

    ©2014 About.com. All rights reserved.