what abt use recrystallization tek on crystalization?

[Z E D]

If SWIM uses heptane as solvent, couldn't he make the oils precipitate directly from the solvent used in the pulls?

Take the solvent from the pull, put it in the becker, evaporate it until it saturates, then evaporate it in hot bath until saturates, then freeze preciptate. (edit: always swirlling it)

Using heptane as solvent for the pulls SWIM could do this, no? Guess he'll try it soon.

 

[acolon_5]

I'm not quite sure I understand.

If you super saturate the heptane it will still be super saturated with oil as well as spice. This will all precipitate out when you freeze.

Also as you evap you will reach the saturation point of the DMT before you reach it for the oils, so the first thing to come out is probably going to be spice, not oil.

Give it a try though, I am no chemist!

 

[Z E D]

If you super saturate the heptane it will still be super saturated with oil as well as spice. This will all precipitate out when you freeze.

Yes, and if SWIM evaporate this heptane he'll get spice+oils, but if he put it on heptane he'll have spice+oils again, no?

Also as you evap you will reach the saturation point of the DMT before you reach it for the oils, so the first thing to come out is probably going to be spice, not oil.

That part i really didn't understand...

 

[acolon_5]

If you super saturate the heptane it will still be super saturated with oil as well as spice. This will all precipitate out when you freeze.

Yes, and if SWIM evaporate this heptane he'll get spice+oils, but if he put it on heptane he'll have spice+oils again, no?

Also as you evap you will reach the saturation point of the DMT before you reach it for the oils, so the first thing to come out is probably going to be spice, not oil.

That part i really didn't understand...

Part 1) Yes, if you evap you will get exactly what you put in. Heptane dissolves spice alot better than oils, so no, you will leave behind some of the oils when you add heptane to your oil/spice combo.

2) Re-reading the second part I don't think I quite understand what I was trying to say myself. Please disregard!

 

[Infundibulum]

Strange. I thought acolon's second part about the different saturation points of dmt and oils was a very good point, making perfect sense.

 

[acolon_5]

^Thanks. It was late when I was typing my second post.

I guess what I was trying to say is that the spice will fall out long before the oils will. The method descibed in the first post will not seperate oils from spice.

 

[Z E D]

I feel very sorry to say I still don't understand

 

[kagenical]

Then I don't think you honestly know what the point of freeze precipitation is.

Naptha, and Heptane, can hold a finite amount of DMT at room temperature. This amount decreases as it cools, forcing the DMT to precipitate out of it (I know you know this already, but bear with me)

However, these solvents are much better at dissolving the yellow oils and tannins in MHRB than DMT it's self, at any temperature. This is why freeze precipitation works, the oils stay dissolved in the solvent, while the DMT falls out of it.

You're asked, "couldn't he make the oils precipitate directly from the solvent used in the pulls." We're saying that no, you can't, because the oils will *always* be more soluble in your solvent than the DMT will, and there's nothing you can do that will make the oils precipitate out of the solution, before the DMT will.

If you evaporate your solution to saturate it, you'll have higher concentrations of BOTH oil AND DMT. If you freeze it then, you'll probably get a ton of DMT precipitating out of the liquid, with very little oil precipitation - this is why (and how) freeze precip works.

The *only* thing I can think of that you could do to remove oils from your solution would be to defat it with some sort of polar solvent, such as acetone (although, I'm fairly certain that regular, non FASA, acetone reacts with DMT in an unfavorable way).

 

[Z E D]

huh, thanks, SWIM though the NPS would dissolve DMT better...

But, following this though, why recrystallization works? Just because SWIM makes freeze precipitations again and again?