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Cocaine A/B Extraction: HCl gas

O

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Greenlighter
Joined
Jul 26, 2011
Messages
4
If one would use HCl gas, dissolving it in the acetone, instead of aqueous solution, would there be still be a risk of overshooting the pH?
I have read somewhere that you don't have to calculate then how much HCl you would need, and don't have to worry about making it too acid (destroying the cocaine), but don't know if its true, and seeing as it takes a lot of extra trouble to get the HCl in gas form I'd like to know before I'd actually do it this way.

Also:
What other solvents could be used instead of acetone for doing this (and instead of ether), seeing as acetone/ether are hygroscopic so it would be even better to have another solvent. Which one would you pick, that would also precipitate the cocaine out (seeing as acetone on itself is not enough to precipitate it, you need to add methanol/ether)
 
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Acetone, Ether ,Hexane, zippo fluid (wash with water first)
Dissolve base in solvent, Add hcl and stir until no more salts fall to the bottom of beakerr:p
 
jammon said:
Acetone, Ether ,Hexane, zippo fluid (wash with water first)
Dissolve base in solvent, Add hcl and stir until no more salts fall to the bottom of beakerr:p
Click to expand...

And is Hexane hygroscopic? If not this would maybe be perfect for this?
 
I'm not sure how well toluene or xylene would dissolve cocaine freebase, but they seem to work well enough for other drugs.
 
Hexane is not hygroscopic. It it immiscible with water and will only absorb trace amounts at most.

I don't think acetone would be a good choice. It is very good at dissolving organics, so I expect both the freebase and salt would stay in solution. Besides, being a ketone, it is reactive towards acids and bases.

How do you plan on getting HCl gas, anyway? The closest thing I can think of is concentrated HCl solution (in water) available from hardware stores. Boiling this will give you an azeotropic mixture of HCl and water, mostly the latter. I don't think it's feasible to dehydrate that, but I might be wrong here.

Notably, ether is reactive towards strong acids, but inert to strong bases. Just FYI.
 
The.Ghost said:
Hexane is not hygroscopic. It it immiscible with water and will only absorb trace amounts at most.

I don't think acetone would be a good choice. It is very good at dissolving organics, so I expect both the freebase and salt would stay in solution. Besides, being a ketone, it is reactive towards acids and bases.

How do you plan on getting HCl gas, anyway? The closest thing I can think of is concentrated HCl solution (in water) available from hardware stores. Boiling this will give you an azeotropic mixture of HCl and water, mostly the latter. I don't think it's feasible to dehydrate that, but I might be wrong here.

Notably, ether is reactive towards strong acids, but inert to strong bases. Just FYI.
Click to expand...

I'm thinking about using this:
http://www.erowid.org/archive/rhodium/chemistry/hcl-gas.html

It works on the principle of:
HCl·(H2O)x + H2SO4 = H2SO4·(H2O)x + HCl(g)

And else I would get the lab material, that's not really an issue, using the same equation though, installing it like this:
http://www.erowid.org/archive/rhodium/chemistry/tcboe/pictures/picture4.gif
 
Failing that, if you can tell the difference between different types of plastics, you can build something out of polyethylene, as that's inert to strong acids and most other chemicals. Plus, glass tubing snaps really easily. I would also add some WD40 to the mix to keep foaming down.

You can generate HCl gas by mixing muriatic acid with calcium chloride driveway ice melter, but if you do it that way, it's not very dry. You can get sulfuric acid drain opener at most small hardware stores in the US. The big ones like Lowe's and Home Depot tend to not carry as many potentially dangerous chemicals, probably for liability purposes.

Oh... wait. A better way to make HCl is:

H2SO4 + NaCl = NaHSO4 + HCl. The benefit here is that there is no water, which can mess things up if it gets into the HCl stream. I saw the H2SO4, and assumed you were dripping it onto salt. If you do drip it onto salt, that's where I recommend adding a little WD40 to keep foaming down.
 
onepot said:
Failing that, if you can tell the difference between different types of plastics, you can build something out of polyethylene, as that's inert to strong acids and most other chemicals. Plus, glass tubing snaps really easily. I would also add some WD40 to the mix to keep foaming down.

You can generate HCl gas by mixing muriatic acid with calcium chloride driveway ice melter, but if you do it that way, it's not very dry. You can get sulfuric acid drain opener at most small hardware stores in the US. The big ones like Lowe's and Home Depot tend to not carry as many potentially dangerous chemicals, probably for liability purposes.

Oh... wait. A better way to make HCl is:

H2SO4 + NaCl = NaHSO4 + HCl. The benefit here is that there is no water, which can mess things up if it gets into the HCl stream. I saw the H2SO4, and assumed you were dripping it onto salt. If you do drip it onto salt, that's where I recommend adding a little WD40 to keep foaming down.
Click to expand...

Hmm never heard of this WD40 before, I'm not from the US though maybe thats why ;). You reckon the salt way is better than the HCL + H2SO4? Why?
 
WD40 is a thin silicone-based lubricant. You use it to lubricate stuff.

Actually, thinking about it, if you have the glassware, the way you showed will work fine. Moisture will probably not even be a problem, since the H2SO4 is pretty good about soaking that up. The thing I like about H2SO4 + NaCl is that they react very slowly, and you can control the reaction rate by warming or cooling the container. So you just have a single stoppered flask with a tube coming out of it. Just put in the salt, pour in some H2SO4, then seal it up again quickly. If you want it to go faster, add the H2SO4 first. Again, you need the silicone oil to control the foaming, but foaming is probably the only problem you'd have. This method is less precise, and takes some practice, but it's easier and requires less equipment. Also, you don't have that glass acid tower sitting on your workbench to get knocked over. The only major downside is that you can never completely stop the gas production, unless you quench everything in a lot of water. So you do need to do it somewhere with really good ventilation.
 
Oh, another way to do it is to get a polyethylene eyedropper bottle. (polyethylene is translucent white when not colored) They sell liquid plant food in bottles like that. Empty the bottle, put H2SO4 in it, then fill the eyedropper with muriatic acid. Have a tube coming out of the top/side of the bottle, also polyethylene. Seal the lid up, so the eyedropper is inside the bottle. Then when you want to generate some HCl gas, squeeze out a few drops of muriatic from the dropper lid while it's on the bottle.
 
you can dissolve the base in zippo fluid. Then prepare a 1:2 hcl acid:ethanol solution and add dropwise
 
hexane dissolves caffeine, doesnt it?
I've read that its soluble in polar and non polar solvents
It must be the speedy cut that gives anxiety and makes the heart race

"Caffiene(C8H10N4O2) common name trimethylxanthene naturally produced by several plants such as coffe beans, coca beans, tea etc. Its an alkaloid containing nitrogen and properties of an allkali.Solubility of a substance in solvents depend upon how efficiently the solvent molecule break interactions between the solute and solvent molecule.This is of course broad generalization that water is highly polar molecule while the caffeine is partialy polar molecule has a significant hydrophobic portion. In water caffeine makes hydrogen bonds invoving atoms with free electron pair (N & O) so caffiene is readily dissolve in cholroform and other organic solvents instead of water. And u must know that alkalies turns milky when mix in watex specially caffeine is 9 times less soluble in water."

http://answers.yahoo.com/question/index?qid=20071010042303AAfxiXH
 
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crystallization in hexane

Just fill a measuring spoon with 2 finelly chopped grams and add 5 ml of ethanol.
Mostly cocaine will dissolve immediately, whatever does not on the spot, is a cut, caffeine in my case.
Then pour the alcohol onto a glass dish leaving the undissolved cut behind.
Let it evaporate
I've tried it and it does get rid caffeine and its nasty effects and bitter taste..

check the definite tek http://www.bluelight.ru/vb/threads/632250-The-Definite-Cocaine-Extraction-Tek-)
 
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