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official extraction help thread

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Hey guys, I need a little help understanding what’s happening during the water wash stage, specifically related to obtusifolia. My extraction method is A/B and my NPS is toluene.

I performed a water wash using 20ml distilled water, a pinch of sodium carbonate and a pinch of salt.

After washing the toluene the water became murky with clear blobs attached to the surface of the beaker and the toluene became cloudy (it was close to clear before the water wash).

I understand the purpose of a water wash but there’s some things that confuse me:

1) Why are there blobs in the water? What are the blobs? Is it DMT? (I get the same looking blobs when using Shellite for freeze precipitation).

2) Why do we basify the water when we are trying to get rid of base contaminants? Won’t adding base potentially contaminate the NPS further?

I always get a bit derailed at this stage of the extraction, primarily because I have a feeling I’m losing a part of the extract in the water wash. Any help would be greatly appreciated :)
 

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Hey CheeseCat

After washing the toluene the water became murky with clear blobs attached to the surface of the beaker and the toluene became cloudy (it was close to clear before the water wash).
The toluene turning cloudy might be because the added water cooled it down reducing the solubility of dmt in it, that's why the water wash is usually done warm to keep the dmt solubility in the NPS high (both the water and NPS are warmed). It could also be that the water became suspended in the toluene if you shook it vigorously.


1) Why are there blobs in the water? What are the blobs? Is it DMT? (I get the same looking blobs when using Shellite for freeze precipitation).
Not sure about the blobs, maybe some thing about water tension, or the NPS causing the galss to become more sticky, or a film counting the blobs. In any case it seems like something that you should resolve as you need full separation to pull the NPS cleanly.


2) Why do we basify the water when we are trying to get rid of base contaminants? Won’t adding base potentially contaminate the NPS further?
Bcz water, even distilled water, becomes acidic as it absorbs CO2 from the air, the pinch of soda carb is to counter that and minimize dmt losses. The amount of soda carb you're putting is miniscule compared to the base soup the NPS was in contact with. So you won't be further contaminating the NPS unless it was ultra clean to begin with. And yes the base water can become suspended in the NPS but would you rather have lye or soda carb in your final product? The water wash minimizes the risks.

You'll find this thread very relevant.
 
Hey CheeseCat


The toluene turning cloudy might be because the added water cooled it down reducing the solubility of dmt in it, that's why the water wash is usually done warm to keep the dmt solubility in the NPS high (both the water and NPS are warmed). It could also be that the water became suspended in the toluene if you shook it vigorously.



Not sure about the blobs, maybe some thing about water tension, or the NPS causing the galss to become more sticky, or a film counting the blobs. In any case it seems like something that you should resolve as you need full separation to pull the NPS cleanly.



Bcz water, even distilled water, becomes acidic as it absorbs CO2 from the air, the pinch of soda carb is to counter that and minimize dmt losses. The amount of soda carb you're putting is miniscule compared to the base soup the NPS was in contact with. So you won't be further contaminating the NPS unless it was ultra clean to begin with. And yes the base water can become suspended in the NPS but would you rather have lye or soda carb in your final product? The water wash minimizes the risks.

You'll find this thread very relevant.
Awesome, thanks @Sakkadelic! That information is incredibly helpful. I'll read through that thread soon :)
 
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