catfish (Hive Bee)
07-09-03 16:27
No 445873
      acetone-water/ tartaric extraction  Bookmark   

Hi all-
so SWIM has these MG seeds and ground up 26 g to a powder. The flour was defatted with 2X50 mL tetrachloroethylene, filtered and dried. Extraction with 5 g tartaric acid in minimum of water and ~150 mL acetone followed; portion wise, 20 mL at a time, filtering with cotton and washing the cotton with last 10 mL. Evaporation so far has yielded a yellow fluid, growing viscous VERY gradually, with some xtals forming, most likely excess tartaric acid. More later.
-catfish

all information related for educational purposes only!
no quarter asked, none given
 
 
 
 
    catfish
(Hive Bee)
07-10-03 12:23
No 446141
      acetone and TCE are miscible  Bookmark   

B-
the main reason SWIM waits for the flour/ pulp to dry is that the residual TCE is miscible with the acetone.
So far, only sticky oil has turned out.
Oil was taken up in IPA, and poured into ~6 oz of 24% **** in the dark. We will see what the morning brings...
-catfish

all information related for educational purposes only!
no quarter asked, none given
 
 
 
 
    Nevermore
(Stranger)
07-20-03 20:09
No 448671
      SWIM had the same result, dense gold brown...  Bookmark   

SWIM had the same result, dense gold brown fluid with a strong fruitly smell. But was too much "spicy" due to the tartaric, wish to know how to deal with the acid, should add some ammonia drops, or use NaHCO3?

Nevermore!!