Korialstrasz69
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Caffeine
First,how to test if what i have is caffeine?then how can i tell how pure is it(if possible without advanced equipment)like precipitating it out and
measuring the mass or something.
thanks ahead.
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aga
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Google 'Caffeine Titration'
Many results, including an electrochemical one.
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ave369
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Caffeine can sublime. Try subliming the powder you have by heating it in a beaker (or jar), with a flask filled with cold water sitting on top of it.
If crystals condense on the bottom of the flask, you've got caffeine, rather than some other alkaloid.
Also, what exactly do you know for sure about the substance? Do you know for sure that it's some alkaloid, maybe caffeine, maybe not?
[Edited on 3-10-2015 by ave369]
Smells like ammonia....
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j_sum1
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This vid shows the sublimation of caffeine quite nicely. https://www.youtube.com/watch?v=fkhO3461T0E
In my (limited) experience, I get a purer (looking) product from tea than from coffee. If I was serious, I would look for a quantitative test of what
I had produced.
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DalisAndy
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J_sum1 you have a video or a particular way to make caffeine?
Elements Collected: 19/81 (Excluding all radioactive, using placecard for those)
Any tips or good sources are welcome.
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j_sum1
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I followed a handful of yt vids: the one I cited before is the best. Julyana (whom we haven't seen here for a while) made another.
It's a simple liquid liquid extraction using DCM and a sep funnel.
I don't have any additional knowledge to offer - only what I gleaned watchibg youtube. It's an easy search.
Tea seems easier than coffee. Limited success with caffeinated soft drinks and I am not sure why. DCM seems to be the most common solvent although
ethyl acetate is also used.
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Korialstrasz69
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Well i'll be trying a new easier way (To me at least) using MgO.gonna post it as soon as i get the oxide.And thanks everyone for replies.
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aga
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DCM has a low boiling point (39C) so you can rip it out with just vacuum if ambient temperature is reasonably comfortable - no heating, no flames,
nothing.
It will be wonderful Korialstrasz69 to see some notes, references and/or photos of your experiments.
If you do that, more sensible people will comment and give you great information.
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DalisAndy
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Quote: Originally posted by Korialstrasz69  | | Well i'll be trying a new easier way (To me at least) using MgO.gonna post it as soon as i get the oxide.And thanks everyone for replies.
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If you have Epsom salt, heat up in a furnace to make MgO. But why use MgO and what for?
Elements Collected: 19/81 (Excluding all radioactive, using placecard for those)
Any tips or good sources are welcome.
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