TheChemiKid
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Making Acetone
I know of several ways of making acetone. I think potassium permanganate can oxidize 2-propanol to acetone. What would the equation be? Please Help!
PS Can anything be used besides KMnO4 and H2O2?
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TheChemiKid
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Is these correct equations?
(CH3)2CHOH + H2O2 ==> (CH3)2CO + 2H2O
(CH3)2CHOH + 2KMnO4 ==> (CH3)2CO + H2O + 2MnO2 + K2O + O2
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Fantasma4500
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why not just decompose calcium acetate?
dec. : 160*C
goes into CaCO3 and acetone
from here you can then add vinegar yet again, recrystallize etc. to get calcium acetate again, basically making acetone from vinegar, in which can be
made at home
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TheChemiKid
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I know acetone can be made from acetates, I have done it many times. My aim here is to explore the science.
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bfesser
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<img src="../scipics/_warn.png" /> <em>Avoid mixing solutions containing H<sub>2</sub>O<sub>2</sub> and acetone,
as <a href="http://en.wikipedia.org/wiki/Acetone_peroxide" target="_blank">explosive peroxides</a> <img src="../scipics/_wiki.png"
/> may be produced.</em> <img src="../scipics/_warn.png" />
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TheChemiKid
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Quote: Originally posted by bfesser  | | <img src="../scipics/_warn.png" /> <em>Avoid mixing solutions containing H<sub>2</sub>O<sub>2</sub> and acetone,
as <a href="http://en.wikipedia.org/wiki/Acetone_peroxide" target="_blank">explosive peroxides</a> <img src="../scipics/_wiki.png"
/> may be produced.</em> <img src="../scipics/_warn.png" /> |
Thank You So Much!!! I forgot about Acetone Peroxide. I do NOT want TATP in my lab!
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TheChemiKid
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Never mind, I found 2 things:
This:
  
And this:
[Edited on 14-8-2013 by TheChemiKid]
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TheChemiKid
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How to make Acetone
I found an easy way to make acetone.
Mix 1 gram of isopropanol with to 1.5 g potassium permanganate and 1.5 grams of copper sulfate which have been ground together with a mortar and
pestle into a fine powder. This is all added to xylene (it doesn't need to be a specific isotrope). Heat this to 40-45°C for a time. I have done this
twice. It has worked for me in 30 minutes. And once it needed over 2 hours. Afterwards, filter the final product and set up for simple distillation.
Collect what comes over up until 60°C. You should have a relatively high yield of Acetone.
[Edited on 15-8-2013 by TheChemiKid]
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kristofvagyok
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| Quote: Originally posted by TheChemiKid | I found an easy way to make acetone.
Mix 1 gram of isopropanol with to 1.5 g potassium permanganate and 1.5 grams of copper sulfate.... |
Have you calculated even once that how much would 1l acetone cost with this method?
Acetone is a commercial solvent, easily available and cheap (2USD/l at us). May I ask, that is it worth? A lot work and a lot good reagent for a
little ketone? Sounds bad.
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-Pictures from chemistry, check it out(:
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bfesser
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<strong>TheChemiKid</strong>, where you wrote "isotrope," I think you mean <a href="http://en.wikipedia.org/wiki/Isomer"
target="_blank">isomer</a> <img src="../scipics/_wiki.png" />.
<strong>kristofvagyok</strong>, that's the kind of attitude that saddens me. This site is about science and experimentalism, not
commercially/economically viable industrial scale production.
[edit] <a
href="viewthread.php?tid=25035&page=4#pid295834">[reference requested]</a>
[Edited on 16.8.13 by bfesser]
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franklyn
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@ TheChemiKid
Industrial methods have economies of scale. Methods perfectly suited to
small scale production do not readily lend themselves to larger application.
Acetone => neutralize Lime CaO with Acetic acid , dry distill this acetate. Acetone
vapor comes off pure.
http://chestofbooks.com/science/chemistry/Distillation-Princ...
.
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bfesser
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Thread Split
16-8-2013 at 15:09 |
TheChemiKid
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| Quote: Originally posted by bfesser | <strong>TheChemiKid</strong>, where you wrote "isotrope," I think you mean <a href="http://en.wikipedia.org/wiki/Isomer"
target="_blank">isomer</a> <img src="../scipics/_wiki.png" />.
|
Thank you, that is what I meant.
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Fantasma4500
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exactly franklyn, the byproduct is decomposition of Calcium Acetate is CaCO3, which can then again be reacted with acetic acid
i suppose it could be crystallized out if making this in bulk, aaaaand just as i recalled it, the solubility is 37 at 0*C but 27 at 100*C
not much idea in crystallizing it out as you would need...
well 100 mL would yield 10g
so 1L would be 100g
and 10L would be 1kg
not really that much if you consider that 150 mL (100g) calcium acetate would yield 48 mL acetone approx
so 10L into say 500 mL acetone, better off using a plate with massive surface area and perhaps charcoal / wood fire to boil it off, perhaps just
evaporation
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