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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: limpet chicken on January 15, 2005, 10:30:16 AM

Title: H2O2 by volume to % measurement?
Post by: limpet chicken on January 15, 2005, 10:30:16 AM

I am in need of stronger hydrogen peroxide than can be bought OTC, and have found a source, but they sell solution strengths by volume rather than as a % solution, and I'm looking at the strongest they have, which is 100 volumes.

I took a look at some bottles of dilute peroxide that I have lying around, and every 3% seems to be 10 volumes, is this right: 3%-->10 vols, so, 100 vols=10x10=10x3=30% peroxide %concentration?

Thanks.

(grrr, it took me 1, 1/2 hours to work that out :P)

Title: Re:H2O2 by volume to % measurement?
Post by: AWK on January 19, 2005, 08:24:26 AM

Commercial H2O2 contains about 30-33 % of H2O2. Percentage v/v and w/w are quite close together.
# % H2O2 is produced from 30 % by dilution 10 timwes.

Title: Re:H2O2 by volume to % measurement?
Post by: yipster on January 25, 2005, 02:29:01 PM

(http://www.swissrocketman.com/images_ete15/ete15_19.jpg)(http://www.swissrocketman.com/images_ete15/ete15_20.jpg)
there are laws on transporting high % H2O2, insurance i heard is high too. its dangerous >:(
have a look at http://www.swissrocketman.com/

Title: Re:H2O2 by volume to % measurement?
Post by: eugenedakin on March 30, 2005, 02:22:37 PM

You are very close in your calculations.  When you have a 3 percent H2O2 solution in 10 volumes, the concentration of 100% H2O2 is 0.3 volumes.

The industrial strengths of Hydrogen peroxide are 30% and 50%.  BE CAREFUL!!!  In the 'old days', concentrated hydrogen peroxide was used as the oxygen portion of boosters for rockets sent into outer space.

I hope this helps.  :)

Sincerely,

Eugene Dakin Ph.D., P.Chem.