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Is Hydrogen Peroxide Bad for the Environment?
Good Question

4-16-2008hydro.jpgQ: I recently did a purge of my bathroom medicine cabinet, and came up with 5 bottles of hydrogen peroxide (?!) What do I do with these? Is hydrogen peroxide bad for the environment?

Sent by Gail

 
 

Editor: Well, according to the EPA, hydrogen peroxide "breaks down rapidly in the environment to oxygen and water."

So... you could leave the caps off for awhile and safely dump them. But since that feels pretty wasteful to us, try using it for a myriad of other things, as greenlivingtips.com suggests, such as sterilizing your toothbrush or killing mold in your bathroom.


Image: timsamoff; sxc.hu

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Comments (14)

I would keep them around for cleaning out clogged drains. First, pour 1/2 cup of baking soda, follow with the hydrogen peroxide and then cover.

Also, it can be used as moutwash or for brushing teeth. It has a whitening effect and is not harsh.

There are so many uses it seems wasteful to throw it out.

posted by saradanger on April 16th 2008 at 7:09am
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Oh, thank goodness. I did some research and decided it was ok to pour it down the drain, but was embarrassed to admit it. Glad to hear your research pointed in the same direction. We are moving, and so there was no way those bottles were coming with us!

posted by SFGail on April 16th 2008 at 8:15am
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Maybe I'm a psycho-germophobe, but I keep my toothbrush (brush side down) in a cup of hydrogen peroxide, which I change every few days. Those bacteria that fly all around when you flush? They don't get on my toothbrush that way. You can also use it to flush out your ears if they get a little waxy.

posted by Jezebella on April 16th 2008 at 12:32pm
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My high school chemistry teacher also said that hydrogen peroxide that doesn't fizz when you pour it on a cut or down the drain should probably be tossed out, because the "cleaning" power is gone.

I use hydrogen peroxide for skin scrapes, rubbing alcohol to clean and disinfect bathroom fixtures, and baking soda/white vinegar for drains.

posted by gquaker on April 17th 2008 at 7:15am
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Hydrogen peroxide is also great for lifting blood stains. It's gentle on most fabrics, even delicates. It also eats away at the scummy stuff that collects around the crevices of my shower drain. I've also used it to soak and whiten shoelaces.

posted by TexanNewYorker on April 17th 2008 at 11:25am
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Many years ago we used it in a laundry to bleach out the scortch (from a too hot iron) when we were ironing white dress shirts. It saved washing them all over again

posted by Minervauk on April 18th 2008 at 3:14am
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I use hydrogen peroxide to help keep my kitchen sink extra clean and hopefully just a little more germ-free. After scrubbing it down with baking soda and rinsing, I give it a final spritz with the hydrogen p. All natural and super-cheap kitchen cleaning and disinfecting!

I also did a wee bit of recycling by using a rinsed spray-top nozzle from a former bottle of natural cleaning spray on the hydrogen peroxide bottle. Since most bottle tops are a standard size, all I had to do was trim the spray-top tube so that it now fits perfectly in the bottle of hp.

posted by beelzabean on April 18th 2008 at 9:22am
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Hydrogen peroxide also decomposes into water over time (even sealed in a bottle), so if they're well past the expiration date it's doubtful that there's much peroxide even left to use.

posted by ChristopherB on April 21st 2008 at 9:32am
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test.

posted by sstrudeau on January 8th 2010 at 2:26pm
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How large can a medicine cabinet be, that one could "come up with" five (5!) bottles of something that had gone unnoticed before? Maybe it's cuz I live in London where space is at a premium, but I just find that amazing.

posted by pz on January 9th 2010 at 8:51am
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pz, I'm wondering the same thing!

posted by deezy on January 9th 2010 at 9:57am
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Hydrogen Peroxide is h202, so just an extra oxygen atom tacked onto some water and like PPs mentioned not the super stable, so it turns into water v. easily.

posted by czg on January 9th 2010 at 4:47pm
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The lack of chemistry knowledge here saddens me.

posted by Kitalita on January 12th 2010 at 12:48pm
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TexanNewYorker: Hydrogen Peroxide is the main active ingredient in Tide to Go stain pens. Just a matter of packaging (and markup!).

posted by dtremit on January 14th 2010 at 1:12am
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