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MDMA.HCl density

don't know

Seems to depent on what polymorph you have. And it could be a mixture

Quote from Pihkal:
the actual form that the final salt takes depends upon the temperature and concentration at the moment of the initial crystallization. It can be anhydrous, or it can be any of several hydrated forms. Only the anhydrous form has a sharp mp; the published reports describe all possible one degree melting point values over the range from 148-153 ° C. The variously hydrated polymorphs have distinct infrared spectra, but have broad mps that depend on the rate of heating.

In anycase, you just have to find the density of what you have by doing 2 measurements. and one division. Seems to me that if there are polymorphs that are formed, there wouldn't be a density for that applies for all mdma hydrochloride.
 
Oh, i thought it was a standard kind of thing!

What measurements and division i am going to take/do exactly?

You mean: substance qtt (mass) / substance volume ?

ok this gives me the density right...

But how do i measure the volume of MDMA.HCL powder? (i am talking cubic centimeters)
Do i have to measure it with a known container (like a 2ml container fully filled) Or you have other methods?
 
^you could use any volume measurement (teaspoon for example) then use google to convert x amount of teaspoons to liters (assuming you want your final answer in g/L)

measure the weight and convert it to grams in google and then do the division and you have g/L
 
johanneschimpo said:
do what that king did to see if his crown was pure gold
Click to expand...
The problem is that the MDMA.HCl will dissolve in the water, unlike a crown, and you won't get an accurate measurement of the volume of the solid MDMA.HCl.

You could do it with, for example, toluene or xylene on the other hand.
 
There isn't a standard density for MDMA powder because the density will cary according to crystal size/shape. If you want an estimate of the density of a particular batch, try measuring out 1/2 of a teaspoon, weighing it, and dividing that weight by 2.5. (One teaspoon contains a little under 5 cubic centimeters.)
 
I would suggest dissolving it in deionized water to give a total volume and use a hydrometer to measure the density. This has the advantage of giving you the same reading no matter how many H20's are in each crystal; and hydrometers can be purchased for cheaply at any home brew shop.
 
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