Ch3cooh?
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Old 08-09-2008, 12:23 AM
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Post Ch3cooh?

what is CH3COOH? if it's explosive than let me know and where/how to get/synthesize it.
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Old 08-09-2008, 12:31 AM
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Quote:
Originally Posted by pyrokitty14 View Post
what is CH3COOH? if it's explosive than let me know and where/how to get/synthesize it.

CH3COOH = acetic acid aka ethanoic acid

Don't remember much about it. I remember back when I was researching chems, acetic acid had something to do with vinegar. I also remember people mis-compounding it as "C2H4O2"

EDIT 1:

Just came to me! Yes it can expload if mixed with HNO3 (nitric acid) but yet again nitric acid is pretty extreme itself.
As far as getting it/extracting it, I'm not to sure. Thats all I remember about acetic acid.

EDIT 2:

Ok, I dug through all my papers and found all my information about acetic acid. I was correct, its vinegar.

CH3COOH alone will not expload and its not an explosive.. CH3COOH is just vinegar. You can go to your local dollar store and pick some up. No extractions necessary (unless you want to remove the water, which in that case, let it boil. water boils faster then acetic acid then just collect the remaining liquid and you have pure acetic acid)

BUT from your acetic acid, you can make sodium acetate! Sodium acetate can be turned into hot ice.
I do remember this quiet well. Mixing acetic acid with sodium hydroxide or sodium bicarbonate will make sodium acetate trihydrate in a salt form. From there, you can heat it to 100oC (212oF) to turn it into a liquid. Then when the solution reaches room temperature, it "supercools" forming an ice. You can pour it on a plate at room temperature and it will form and ice too. Its really fun to play with. I did it as a science project about 10 years ago.

EDIT 3:

Oh I forgot to mention, if your planning on making sodium acetate with sodium bicarbonate (which is baking soda if you didnt know) you will have to microwave it for over 20 minutes. Until you hear it starting to pop.
or if your using sodium hydroxide (which is lye if you didnt know) all you do is add water to it and use to titration method (google it) to turn it into sodium acetate.

in simple terms:
sodium bicarbonate method = freebase method you can do at home
sodium hydroxide method = semi-freebase requiring some lab equipment

EDIT 4:
I also forgot to mention you can make it into a "dry ice bomb/vinegar bomb" but bomb discussion goes against forum rules so i wont be telling you how to do that. its easy to do but yeah. gotta fallow rules

Last edited by 123Shadow123; 08-09-2008 at 01:07 AM.
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Old 08-09-2008, 12:56 AM
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thanks man
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Old 08-09-2008, 02:35 AM
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no.

you can however dissolve as much bicarbonate as possible into vinegar to make a saturated solution of sodium acetate and evaporate the water, mix with sulfuric acid, distill for pure acetic...the boiling method stops at around 70%...study more please poster above me.
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Old 08-09-2008, 09:46 AM
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no.

you can however dissolve as much bicarbonate as possible into vinegar to make a saturated solution of sodium acetate and evaporate the water, mix with sulfuric acid, distill for pure acetic...the boiling method stops at around 70%...study more please poster above me.
Corporal, you happen to remember any synths wherein glacial acetic is needed?? thanks
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Old 09-20-2008, 09:14 PM
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Quote:
Originally Posted by Corporal Punishment View Post
no.

you can however dissolve as much bicarbonate as possible into vinegar to make a saturated solution of sodium acetate and evaporate the water, mix with sulfuric acid, distill for pure acetic...the boiling method stops at around 70%...study more please poster above me.
Dissolve? They react instantly to form water, sodium acetate and carbon dioxide... the baking soda bombs 123shadow123 referred to.

NaHCO3 + CH3COOH ---> H2O + CO2 + CH3COONa

Solvents and solutes involve no chemical reaction... do more research.

And about those "bombs" you mentioned, since you aren't trying to hurt people (reread the rules on this, they are very specific), use the term explosive... even though they aren't really explosives...

These baking soda/vinegar things are nothing more than a sealed bottle containing both of these things, which react to produce lots of CO2 (reaction above) and build pressure until the bottle can no longer hold it. It gives out under pressure, the escaping gases make a loud boom (the same reason guns are loud), and people call the cops. The cops arrive, and can't do a thing about it except tell you to go home, as you didn't do anything illegal in the first place...

Oh, wait... that's just what happened to me... only I used HCl and Al in a bottle. Stupid pigs thought we were blowing up the whole damn neighborhood...

ANYWAY... expanding gases in a bottle = loud, fun, and legal. Enjoy.
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Old 09-25-2008, 12:26 PM
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Can the reaction itself actually build up enough pressure to rupture the bottle?

It has been quite a while since I have done chemistry, so I'm a bit fuzzy with the details ( If there is anyone who can explain it better or correct me, please do so), but I will try to explain it as best I can.

The way I remember it, I thought that the pressure inside the bottle causes the reaction to halt, and this pressure is not sufficient enough to rupture the bottle on its own. So no matter what quantities of bicard and vinegar you put in the bottle, you will not be able to produce enough C02, and therefore the resulting pressure, to cause the bottle to rupture on its own.

Do a quick look on youtube and you see that all the "vinegar bombs" and such don't explode on their own, but need the people to apply a force to the container (normally by throwing at the ground) to make it go boom.

This is just something that has got into my head and keeps making me think. If this is the case, I wonder if you could successfully shoot the "loaded" bottles out of an air cannon, so then you have projectiles that will explode on impact
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Old 09-26-2008, 09:31 PM
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vinegar (the brown stuff) is also used to check if you've got magnesium or aluminium,if the powder/grit bubbles then it's magnesium.I've checked all the wheels at a local scrap yard and found no mag ones.Sill trying though!
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Old 09-27-2008, 06:36 PM
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Some lightweight machines like lawnmowers often have magnesium parts.
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Old 09-27-2008, 06:46 PM
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Thanks for the info,i'm now checking all metal that looks like aluminium,to see if it's mg.Cheers John.
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Old 10-01-2008, 04:27 AM
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Quote:
Originally Posted by Hobbit Porn View Post
Can the reaction itself actually build up enough pressure to rupture the bottle?

It has been quite a while since I have done chemistry, so I'm a bit fuzzy with the details ( If there is anyone who can explain it better or correct me, please do so), but I will try to explain it as best I can.

The way I remember it, I thought that the pressure inside the bottle causes the reaction to halt, and this pressure is not sufficient enough to rupture the bottle on its own. So no matter what quantities of bicard and vinegar you put in the bottle, you will not be able to produce enough C02, and therefore the resulting pressure, to cause the bottle to rupture on its own.

Do a quick look on youtube and you see that all the "vinegar bombs" and such don't explode on their own, but need the people to apply a force to the container (normally by throwing at the ground) to make it go boom.

This is just something that has got into my head and keeps making me think. If this is the case, I wonder if you could successfully shoot the "loaded" bottles out of an air cannon, so then you have projectiles that will explode on impact
Pressure actually increases the rate at which a reaction happens, it doesn't cause it to stop. If the guys on youtube have to throw them, then they are very good at putting in just the right amount of their limiting reactant so it doesn't blow up on it's own.

The cannon might work if you screw around with the idea enough.
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Old 10-01-2008, 05:11 AM
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Do not even test this stuff out,re check youtube and see fingers being lost.
Why even go there!
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Old 10-01-2008, 09:38 AM
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Quote:
Originally Posted by fenderbender48 View Post
Pressure actually increases the rate at which a reaction happens, it doesn't cause it to stop.
That would appear to be incorrect in this case. Student Experiment 4- Pressure and Rate of Reaction

Quote:
Originally Posted by john lee
Do not even test this stuff out,re check youtube and see fingers being lost.
Why even go there!
I went there because I know teenagers like to put videos of themselves up doing these sorts of things, I wanted to see how many had to throw the bottle, or if any actually exploded from the reaction on its own (which it didn't).
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Old 10-02-2008, 01:55 AM
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How can I concentrate acetic acid from vinegar?
Shadow said it could the water could be evaporated, is this true?
I've also read about fractional crystallization, where the acetic acid will freeze earlier than the water, and then collected as crystals (source), can anyone expand on this? thanks.
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Old 10-06-2008, 05:09 AM
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Well, thank you Hobbit Porn, I'd like to retract that statement and acknowledge the fact that the good folks at BHC know more than I do.

Now, fractional crystallization: The temperature at which acetic acid freezes is 61.6 degrees. Sounds like it should work, but I've never had much interest in vinegar. Standard distillation will most certainly work, though, as the boiling point of acetic acid is 244.5 degrees, notably higher than water's 212. The same thing works with hydrogen peroxide, which has a similar boiling point, so I think I'm safe saying IT WILL WORK with vinegar.
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