Weight - Evaporation/Recrystallization of Research Chemicals?

[Lethargy]

So having applied some thought to the problem of measuring various Research Chemicals a friend of mine proposed an idea to me and I wanted to know any opinions and or experience with this or similar ideas...

He knows that many use a process of dissolving a known weight of material in a known volume of h2o or other solvent and weighing out amounts volumetrically.

He wondered if theoretically one could then take a known volume and evaporate the solvent to recrystallize the substance, thus having a known amount of solid.

He has little chemical knowledge and thus does not know which RCs one could theoretically do this to without degrading quality, though he posited it as a form of measuring 4-ho-mipt (the fumarate salt) and the 2-c family.

He mentioned complicating factors such as the fact that some minute quantity of substance may get left on the surface used for evaporation, and when dealing with such potent substances this "minute quantity" may have a large degree of significance.

Thoughts/Experiences? As mentioned this friend specifically wondered about the possibility of this technique with substances active in the mg range and knows that alone may pose problems due to dealing with very small quantities, but would like to know of any other possible problems one could think of.

[trptamene]

Originally Posted by Lethargy

He wondered if theoretically one could then take a known volume and evaporate the solvent to recrystallize the substance, thus having a known amount of solid.

Not only in theory but in practice! Removal of solvent will leave non-volatile solutes behind.

Originally Posted by Lethargy

He has little chemical knowledge and thus does not know which RCs one could theoretically do this to without degrading quality, though he posited it as a form of measuring 4-ho-mipt (the fumarate salt) and the 2-c family.

Theoretically this could be done w/ all RC's, but care might be need to be taken in order to prevent degradation of different species

For the 2c's this could be implemented rather easily without sacrificing much in the way quality. For the 4-ho's this may be more of a challenge as one would need to watch out for degredation. One would probably want to do this in the dark and at ambient temperatures.

Originally Posted by Lethargy

He mentioned complicating factors such as the fact that some minute quantity of substance may get left on the surface used for evaporation, and when dealing with such potent substances this "minute quantity" may have a large degree of significance.

At such small quantities where this would need to be considered, one probably won't see "crystal" of any type cotaining a milligram or two of said substance. Instead this will produce a thin film of the substance which one would think more in terms of a "residue" (think of little water spots that for on cars or dishes after cleaning, this is what it would more resemble.

It would therefore be neccesary to ingest this in similar way to which one would ingest the residue off a cocaine baggie.



It should be noted that this process could be expediated if one were to employ reduced pressure for solvent evaporation.

Reputation Comments on this post:

Thank you for your response and knowledge!

[stramonium]

SWIM payed a lot for some Methylone that is very smelly like the Neo products,10 grams SWIM bought.SWIM was wondering if he could dissolve the powder in water and empty on to a smooth surface and let evaperate so that he would be left with pure 99% crystal Methylone?Instead of this yellowy,smelly powder of which SWIM thinks is an adulterant bought from Neo organics to add to the Methylone so as to boost the volume and make more money.If this is the case and is posible to do,will SWIM be left with the true volume of Methylone he aquired?