ayjay
Bluelighter
Hey Crankinit that erowid link looks pretty crap - author seems to have a poor knowledge of chemistry. Also confusing that table shows codeine solubility down as temperature up - is that really right?
Using just cold water, or hot water then cooling, is probably much of a muchness EXCEPT there is a risk that cooling a hot solution will cause slight loss of yield - dissolved codeine trapped within precipitating APAP (I use "APAP" rather than "paracetamol" as it has less letters and I am lazy). This is certainly what happens when preparing an MS Contin tablet for injection.
Using just cold water, or hot water then cooling, is probably much of a muchness EXCEPT there is a risk that cooling a hot solution will cause slight loss of yield - dissolved codeine trapped within precipitating APAP (I use "APAP" rather than "paracetamol" as it has less letters and I am lazy). This is certainly what happens when preparing an MS Contin tablet for injection.

But yes, paracetamol is probably the better generic to use.