Something i have resently discoverd...
After having made some DMT fumarate (BLAB tek and then IPA boil to clean) it ended up being somewhat yellowish.
Then I did a clean wash with some room temp and warm MEK.
The DMT fumarate didnt desolve in the MEK but after drying it (really bone dry), the DMT fumarate was white as a popstars teeth!!
Also taste more bitter then any other batch of DMT fumarate.
-- I evapped the MEK used and this turned out to be really sticky and slight yellow, so deffo something came out of the DMT fumarate (i use labgrade MEK, so its not from that)
THEORY:
So after doing a FASA conversion of freebase to fumarate (or IPA cleaing boil), decant the solvent and then do a MEK wash to clean out all the other stuff the might still be there!
Cheers,
V