If not heptane, then hexane as was suggested earlier?
After crystallization - then evaporation of the solvent, how do you make sure that it is really gone? What is the usual amount of residual solvent in the solute (@ what T, t, P evap)?
Many thanks for your comments so far.
If you go with heptane you canât purge the mother liquor without destroying the terpenes. Its not likely you have any good terps in there anyway
Use a solvent with a lower bp than 75c & not hexane.
You should further clarify why you suggest against hexane.
I would highly suggest it for making isolate.
Itâs good for isolate just not for terps
What would you suggest then?
Thank you.
Acetone
What?
Cbd isolate doesnât have terps
You should be starting with refined distillate
And if you need to purge the heptane off,
Rinse the crystals with cold pentane
The pentane lowers the Bp of heptane via azeotrope.
Thank you to every person replying to my inquiry so far.
Could you define ârefined distillateâ?
While being newbie in cannabis chemistry, and conscious to be one, I worry about the fate of âthe rest of the extractâ. I want to preserve as much as possible everything that is in the starting material, which includes other cannabinoids and terpenes (and other phytomolecules, if there are any). I do not have any idea whether it is possible or not. Nevertheless, I am interested in âthe rest of the extractâ as much as the CBD isolate, if not more.
How well can one purge the alkane solvents without compromising the products?
Thank you for your educated comments.
Thatâs a neat trick