Had an idea to make h2o2 from sodium percarbonate (oxieclean) if you were to react sodium percarbonate (na2co3.h202) with 100% acetic acid (c2h3o20)
that it may make 100% h2o2 when distilled from the salt
Na2co3.h2o2 + 2(c2h3o2) = 2(nac2h3o2 + co3
Or it may make sodium peracetate
Does any one know what would happen?darkflame89 - 27-12-2004 at 00:37
I will be surprised if this works out cleanly. Wouldn't the evolution of
carbon dioxide or the heat produced from the reaction, trigger the decomposition of hydrogen peroxide.
Even if this reaction proceeds as planned, you will not get 100% H2O2, 100%H2O2 means its hydrogen peroxide pure, but here you have a load of water
diluting it. At the very best, you get only 20% H2O2?BromicAcid - 27-12-2004 at 09:43
Don't forget that H2O2 is more unstable in basic enviorments and that the acetate anion is basic as is carbonate, not only that but the
peroxyacetic acid formed is quite toxic and possibly explosive I think that particualr property was mentioned elsewhere on the forum.mick - 27-12-2004 at 11:24
Making 100% H2O2 is charted territory.
Trying to concentrate unknown mixtures with peroxide is not.
mickSaerynide - 27-12-2004 at 13:37
Quote:
Na2co3.h2o2 + 2(c2h3o2) = 2(nac2h3o2 + co3
Wheres the H2O2? Also, you're missing all the charges.
oops
kclo4 - 27-12-2004 at 17:56
I guess it would be a waste of chemical and would not workProtium - 28-12-2004 at 00:21
oxyclean is a OTC source of sodium percarbonate, but it also contains sodium bicarbonate wich neutralizes acetic acid. H2O2 + acetic acid does produce
peracetic acid though. Further, it takes a strong acid (H2SO4) to catalyze the addition of the peroxide to the carboxylic (acetic) acid.
Then...
Na2CO3 + 2CH3CO2H --> CO2 + H2O + 2NaCH3CO2
You can directly add oxyclean to water and fractionally distill to obtain high w/w% H2O2 but you prob. will never obtain 100% H2O2. 90% H2O2 is the
highest reported conentration I've heard of obtained through some serious fractional distillation distillation.
Pure H2O2 ?
MadHatter - 28-12-2004 at 20:52
You're asking for trouble if you can produce H<sub>2</sub>O<sub>2</sub> at 90% or higher. That stuff is used in rocket
car applications and I wouldn't trust it to remain stable. IIRC, 20 ounces at 90% over a silver
nitrate catalyst was sufficient to propel the Vanishing Point rocket car to 365 MPH in 4.46
seconds back in the 80's. I saw this happen at the York U.S. 30(Pennsylavania) dragstrip.
[Edited on 29-12-2004 by MadHatter]neutrino - 29-12-2004 at 06:18
Now I just want to make it more.halogen - 2-1-2005 at 07:52
you cant possibly make h2o2 from oxiclean. when water is added to it, the peroxide component decomposes!kryss - 2-1-2005 at 16:08
If you want H2O2 stronger than 30% your only going to get it by vacuum distillation which needless to say is perilous.
I will be surprised if this works out cleanly. Wouldn't the evolution of
carbon dioxide or the heat produced from the reaction, trigger the decomposition of hydrogen peroxide.
Also, you're missing all the charges.