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How efficient is CWE?

mr.buffnstuff

mr.buffnstuff

Bluelighter
Joined
Oct 19, 2010
Messages
1,124
Ok this has been on my mind for years, does anyone know how efficient this process is? Because surely you can only dissolve so much in codeine in X amount of water? Also I assume some won't dissolve Into the water at all due to being squashed up with the paracetamol?
 
Have you actually read anything on BL about CWE or the really nice codeine thread a few lines below.

Yes it works if you do it right. I'm a coffee filter gal.
 
You can dissolve A LOT of codeine in water, a quick search turns up: solubility = 1 gram codeine per 0.7 ml water.

But you WILL lose some codeine that's left behind in the filter and in the pill gunk. Don't be tempted to squeeze the filter to get every last bit of codeine solution out, just cut your loss.
 
Coffee filters here too. I tried kitchen roll and it's no quicker.

What I do like to do (if I have the time and the inclination) is run it through some cotton first, then the coffee filters. That way you avoid clogging the filters and you can always refilter the gunk in the cotton if you're concerned about any losses.
 
I'm sure kate is 100% correct, but I sympathise with you for apparently not being able to do it right, being totally ignorant when it comes to chemistry myself. You probably already know this, but I only realised recently that codeine linctus is a far easier method to acquire purish codeine legally in the UK, so look into that, unless your question was purely academic, in which case I apologise for my worthless contribution.
 
Hi Kate, yes I know it works I do it often myself but what I'm asking is what's the loss from the process? IE I crush up say 3x 30/500's so that is 90mg codeine. After the CWE how much of the codeine is in the final product? Also how much water do you need to say, dissolve 30mg codeine in?
I'm trying to understand more on the efficiency of it AND to know what the minimum amount if water you can use it, I don't want to have to chug down a litre of shitty tasting water if I don't need to.

Do you see what I'm saying?
 
Your technique plays a big part in the efficacy of a CWE, but it's impossible to say how much you may or may not lose in the process. The better technique, the less you lose.

Generally, unless you're a total fucking plank, it's efficient.

Use as little water as possible.
 
Personally I use a pestle and mortar and turn them to dust, then use like warm water then reduce the temperature to just above freezing before filtering. Always get a good clear result and definitely works but I always wonder how much is lost though
 
It's a pretty valid question I think. (though yeah.. easily googled)

In my experience: not too much but also not too little water. If you put say sixteen pills (500mg codeine) in there you probably don't want to use much more than 30ml of water to avoid getting too much APAP in your solution, but then if you lose just 5ml cos it sticks to the filter/gunk (not unlikely) you'll lose 15% efficiency or 75mg!

So it's a trade off, with more water you have a wider margin and less risk of losing codeine, but also a higher risk of getting too much APAP in your solution.
 
Thanks lurching - not sure where everyone got the idea I don't know how to CWE or if I even doubted it worked though! ?
 
If you use the Bluelight search engine you'll find lots of information on how to do a good cold water extraction. Please don't use a pint of water you don't need that amount more likely 100ml would sufice. Use coffee filters. And keep filtering until solution is clear. When placing in the freezer try not to let it freeze.

lurching said:
You can dissolve A LOT of codeine in water, a quick search turns up: solubility = 1 gram codeine per 0.7 ml water.

But you WILL lose some codeine that's left behind in the filter and in the pill gunk. Don't be tempted to squeeze the filter to get every last bit of codeine solution out, just cut your loss.
Click to expand...

Yes lurchinf talks sense.

Sammy G said:
Generally, unless you're a total fucking plank, it's efficient.

Use as little water as possible.
Click to expand...

Hahahaha love this. Seriously thouh I messed up many a CWE n was ill the next day, dry-heeving, the lot. Patience is the key with CWE. Don't rush it. It's seriously not worth it.

Evey
 
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????? I don't use a pint of water, it was a question I was asking regarding how soluble codeine phosphate is and what's the minimum amount of water that can be used for example to dissolve 100mg codeine. Then also what is the efficiency of the process in terms of how much codeine is in the final product.

Lurching understood the question.
 
The more water you use the more paracetamol will also be dissolved, but if you use the bare minimum filtration will be difficult. 50ml of very cold water should be fine. Wet your filter first as well, otherwise it will absorb all the water.
 
F.U.B.A.R. said:
The more water you use the more paracetamol will also be dissolved, but if you use the bare minimum filtration will be difficult. 50ml of very cold water should be fine. Wet your filter first as well, otherwise it will absorb all the water.
Click to expand...

Fine advice of which I was about to give too. Something like 1g of paracetamol is soluble per 100ml of water used, so you can see the benefit to using a bare minimum of water. The codeine is very water-soluble so it isn't anything to be concerned about. As has been said technique, technique, technique.... that's how you'll improve your yield.

My preferred method is to filter it through an old t-shirt first to get most the APAP out, squeeze the remains then do a second round with a coffee filter without squeezing at the end.
 
Chatative said:
Fine advice of which I was about to give too. Something like 1g of paracetamol is soluble per 100ml of water used, so you can see the benefit to using a bare minimum of water
Click to expand...

Yeah, roughly 1.3g per 100ml, but that's at 20C. Tap water rarely gets that warm (except maybe in a heat wave round these parts).

To be on the safe side I chill my water in the freezer until almost frozen before doing the extraction but that's because I don't have the freshest organ down there (liver) anymore.. it's probably overkill.
 
I tend to use Luke warm water to dissolve it in then cool it down to just above freezing.

My 'organs' certainly not fresh... And I'm not on about my liver! ?
 
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