Question Hydrogen Peroxide Concentration Question?

[Blammo]

I'm wondering if 12% h202 can behave like 35% h202, if you simply add about three times as much 12%.

I've never understood why reactions, that aren't water sensitive can't simply use more dilute h2o2 if that is all that is available.

Csn someone explain this to me?

I'm largely looking at common reactions found on here, but also just in general.

 

[GhostChemist]

In different reactions, a different concentration of hydrogen peroxide will react differently

 

[Osmosis Vanderwaal]

Go go chat gpt! I'm going to go ahead and call foul on the first answer. It came backnas plagiarism from AI. @GhostChemist what are some viable methods of concentrating h2o2? Doesnt seem like distillation or even vacuum distillation would work, how about mag. Sulfate or calcium chloride? Molecular seive perhaps?

 

[GhostChemist]

Through the barium peroxide
BaCl2 + H2O2 + 2NH4OH + 6H2O = BaO2*8H2O (precipitate) + NH4Cl

And next stage reaction with not concentrating H2SO4
BaO2 + H2SO4 = H2O2 + BaSO4 (precipitate)

 

[GhostChemist]

BaO2 Solubility in water
0.091 g/(100 mL) (20 °C) (anhydrous)
0.168 g/ml (octahydrate)

 

[Osmosis Vanderwaal]

Ive bever heard of barium dioxide, vlearly its a good drying agent, absorbing 8 molecules of water per molecule. I gues i should say 8 moles per mole

 

[Precursor-hk]

Right i cought on to that, i was just pointing out its potential as a drying agent. If i didnt fucknthe math up on this 3rd day of wakefulness, BaO² should sequester 75% its weight in water, 1.33333g of it holds a gram of water, by comparison, 4a mol. Seive takes 5 grams forn1 gram of water

 

[Osmosis Vanderwaal]

Right i cought on to that, i was just pointing out its potential as a drying agent. If i didnt fucknthe math up on this 3rd day of wakefulness, BaO² should sequester 75% its weight in water, 1.33333g of it holds a gram of water, by comparison, 4a mol. Seive takes 5 grams forn1 gram of water

 

[Osmosis Vanderwaal]

I like it too ( molecular seive) great for alcohols and acetone,which i use a lot of. Being able to leave it in the bottle is a huge bonus that will keep your solvents dry even after using 1/2 the bottle MgSO⁴ has to be filtered out and making it in the first place. It only took one try to realize you cant skip breaking it up every 15 minute 3-4 times when you are drying it. If you don't it gets as hard as concrete

 

[FENTAMAS]

You can very easy get any % H2O2 solution from any H2O2 product you are able to find, even from 3% pharmacy's product by means of simple water evaporation at room temperature.

Just pour your diluted hydrogen peroxide solution into clean large open glass beaker with layer height of 10-20 mm and leave for a few weeks.
But preferably apply very gentle airflow <1m/s over the beaker to speed up the process. Vapor pressures of H2O2 and H2O at 20C differ by more than an order of magnitude, so it's valuable method.

You can expect to get up to 60-70% solution with the yield of 70-90%, the rest is lost due to co-evaporation with water and some decomposition.
So do not exceed 20C and use clean glass and clean airflow to avoid any catalytic impurities that could highly increase decomposition rate of concentrated H2O2.
With some additional tricks and and stabilization you can even get anhydrous form, but since this already falls into high explosions area, let's stop here.

 

[Osmosis Vanderwaal]

Less than a metermper second , now that's technical! For chemistry. How many degrees should that bend the flame of my lighter? I'm kidding but ive studied the flame bend vs. Airspeed more than anyone i know, and i would guess anyone you know. Different feild

 

[FENTAMAS]

It's not theoretical, it is practical and confirmed working method, well suited for scale up to some degree. With vacuum it could be much faster. 60%+ is possible, but you can stop at 30% if you need exactly 30%.
What is BaO2? Ba(OH)2*8H20?
Those who propose drying hydrogen peroxide with any solids, seems never worked with conc. H2O2, because it will decompose as fast as fuck.

 

[Blammo]

I would only be looking to make 35%, so would running it under a water aspirator strength vacuum for a set time be enough to produce this SAFELY, without worrying about potential combustion or small explosions?