q21q21: this is odd

[liklyut]

Hi everyone.

here's the problem:
SWIM was doing the q21 tek with naphta (it's not his first attempt, although he's not very experienced as well). He did extraction of MHRB, mixed with vinegar, added hot water, then added calcium hydroxide, let it sit (this time it happened to sit 24hrs) and did the first pull, popped it in the freezer and nothing precipitated. which was very odd, SWIM is always using the same technique and it worked all the time, except this one. then out of interest he left that unprecipitated naphta in the freezer, and did another pull, using same brand naptha, popped in the freezer and he's got crystals! this where he get's confused.
second pull yielded as a usual second pull, much less than first one, so SWIM thinks that there's quite a bit of alkaloids in the first naptha pull, which did not precipitate.

Please share your ideas of what to do next (swim wants to avoid evaporation method due to possible additives in Ronsonol naptha).

Thanks

 

[steppa]

Swim wants to avoid evaporation method due to possible additives in Ronsonol naptha

How about not evaping it completely but to a point where it becomes more saturated aka becomes cloudy?

 

[liklyut]

guess it's worth giving a shot. what to do when it's cloudy, freezer step again?

 

[steppa]

guess it's worth giving a shot. what to do when it's cloudy, freezer step again?

Yes.

:thumb_up: Good luck!

 

[liklyut]

great, SWIM is grateful for advice. also, if you could shed some light of why that could happen and help him to understand the process more fully, that would be great.
Thanks

 

[Vodsel]

From the FAQ: How much to pre-evaporate before freezing?

 

[liklyut]

Late reply, but thanks for you guys, I managed it with pre-vap.

 

[null24]

Right on, what did you yield?
H how many grams MHRB?