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Using.... DRY ICE TO FREEZE PERCIPITATE DMT CRYSTALS?

1Starway7

1Starway7

Established member
Just got an idea... knowing that dry ice is... much much!!.... colder....!..than most ordinary home freezers witch often arent cold enough...... It would seem that freeze percipitating dmt in a box with dry ice wraped in paper could quickly produce beautyfull large crystals much faster!... than waiting two or three days in a home freezer...
for saftey... one would have to freez the molecule outside in a box with a small block of ice ....under and posibly over... the extraction dish... .and never!... in the living area of a home... because a larger abount of this stuff.... can displace the air in the room...
i think a small block of dry ice can be bought at some food stores...and it lasts only 2 or three hours....the vapor it releases....CO2.... is invisable and usually harmless... if not in an inclosed space.... if dry ice is put in water it goes grazy...evaporating at a fast pace...


example of its freezing power....It takes seconds for a drop of water to freeze and a few minutes to completely freeze a cup of water

I want to try this idea...has anyone yet tryed it?:alien:
 
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It's an interesting idea but i dont think it will be benefit in the way you expect.
My understanding is flash freshing it would give a sandy product where the big sexy xtals you seek actually come from a slow freezing/crystalization process that gives the structures time to grow as they crash out of solution
 
redbird said:
It's an interesting idea but i dont think it will be benefit in the way you expect.
My understanding is flash freshing it would give a sandy product where the big sexy xtals you seek actually come from a slow freezing/crystalization process that gives the structures time to grow as they crash out of solution
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The freezing process time [is much!! shorter]...using dry ice ....And fast freezing would probibly make smaller crystals..but a dense amount of them fast!

But after some thought im concerned about solvent also freezing? im my case... it would be napatha....

But if the crystals of dmt formed on bottom of dish...i could simply pour off the napatha when it returned to liquid..leaving a solid rug of small dense crystals to be
fan dryed...:unsure:

pretty giant crystals arent as important as purity....
 
You'd need to use a solvent of some kind to ensure heat transfer from the container with the naphtha into the cryogenic cooling, well, bath. Choice of solvent controls the bath temperature, down to -78°C for dry ice + acetone. This is standard lab procedure, and it's best to use crushed pieces of dry ice. Just make sure you're not going to freeze out any of your naphtha components by treating a test sample of the naphtha alone, and if necessary choosing a solvent for the cryogenic cooling bath that will give 'warmer' results than using acetone would.
 
Transform said:
Getting pretty, giant crystals is more of an assurance of purity than getting zillions of tiny specks, all covered in entrained solvent and whatever's dissolved in that, btw.
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Those specks magnafied... [under a microscope]...might look exactly like the large crystals
maybe the crystals will get larger than i think? ....I havent tryed it yet...
Also if im using a reasonably thick clear extraction dish maybe the freezing effect will be slowed some ... by the layers of glass not alowing the dry ice to touch any of the
..
molecule ..Like adjusting the distance of the block of dryed ice from the walls of the extraction dish [ with layers of card board] may be a way of adjusting the freezeing speed... a little/?
None of this has been tryed yet..

all the freezing effect will occure from outside the extraction dish.....
Just another idea ..im shure the freezing time would much quicker than a normal freezer..
 
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Smaller crystals have a larger total surface area for the same mass of substance than larger crystals do. The surface ends up with solvent stuck to it, and whatever's dissolved in the solvent will get left behind once the solvent evaporates.

You'd best look into the physics of heat transfer before you decide whether it's really worth spending money on dry ice. Calculating for the specific heat capacity of naphtha and DMT, along with the latent heat of fusion for DMT versus the latent heat of sublimation for CO₂, will help you to determine whether there's any specific advantage here in comparison with simply using a freezer.

I get that the dry ice will be outside of the naphtha solution, I was suggesting that an additional solvent would be used as a heat transfer agent for the dry ice - again, outside of the naphtha container - as gaseous CO₂ will have poor thermal transfer properties.

Experiment by all means, but it's surely helpful to think about the physics of what's going on too. Cryogenic Cooling baths are an established technique, after all.
 
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