organicchemist25
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H2O2 yield and unknown concentration
I had frozen 6 bottles of H2O2 for several days and then took the cap off and was able to get roughly and consistently 10-15 mL of solution while the
bottle of H2O2 was frozen solid per bottle.
I then put my 6 combined amounts of what I believed to be concentrated H2O2 back in the freezer and let it sit for days, and it has remained
completely liquid.
I plan on testing it next chance i get, but is it safe to assume that I have pretty concentrated H2O2, since it has not froze the least bit?
I have about 68 mL of it. If, it is very concentrated, I would say that is not bad for $3.00. We have two bottles of H2O2 for $1.00 around here.
[Edited on 17-2-2014 by organicchemist25]
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Nickdul
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Depends on the temperature of your chilling box/freezer/etc. There are may ways to test H2O2 concentration - density, O2 gas evolved, iodometry...
UTFSE, there are many, many threads: https://www.google.com/search?q=hydrogen+peroxide+concentrat...
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vmelkon
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To the OP: I guess you are talking about 3% solutions.
We have 473 mL at the dollar store in Canada.
I distilled mine to 50 mL. Density was between 1.07 and 1.08 g/mL. I think it works out to 17%.
Interestingly, the original stuff has a density almost the same as water 1.00 g/mL. I would need higher precision to detect it. At least 4 digits.
Edit: actually I did not distill. It was on low heat, maybe 60 C.
[Edited on 19-2-2014 by vmelkon]
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sargent1015
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Quote: Originally posted by vmelkon  |
Interestingly, the original stuff has a density almost the same as water 1.00 g/mL.
[Edited on 19-2-2014 by vmelkon] |
That is because it is 97% water, so your density should be very similar to that of water.
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Mildronate
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You can titrate it and determine concentration.
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