Cristalización de la mefedrona (4MMC)
Hola a todos
¿Cómo puedo cristalizar una solución acuosa ya preparada de mef utilizando NaCl si no dispongo de harina inicialmente? Digamos, tengo una base de mef en diclorometano y voy a acidificarla en exceso de agua 135 ml por 100 mef, mientras disuelvo el mef en agua - no pongo el mef en harina, sino inmediatamente en agua
En qué momento añadir NaCl y en qué proporciones. Según la experiencia superior, el autor indica 23 gramos por 100 gramos de mef, pero tiene 100 gramos de mef disueltos en 100 ml de agua. Y mi oxidación se produce a una cifra de 135 ml por 100 g del producto.
¿Cuánto tiempo se forman los cristales en el método de la solución salina de NaCl? ¿Qué fracciones de tamaño se obtienen? ¿Cuánto tiempo debe conservarse el producto en el congelador? ¿Afecta el tiempo de exposición al tamaño del cristal?
¡Gracias a todos!
¿Cómo puedo cristalizar una solución acuosa ya preparada de mef utilizando NaCl si no dispongo de harina inicialmente? Digamos, tengo una base de mef en diclorometano y voy a acidificarla en exceso de agua 135 ml por 100 mef, mientras disuelvo el mef en agua - no pongo el mef en harina, sino inmediatamente en agua
En qué momento añadir NaCl y en qué proporciones. Según la experiencia superior, el autor indica 23 gramos por 100 gramos de mef, pero tiene 100 gramos de mef disueltos en 100 ml de agua. Y mi oxidación se produce a una cifra de 135 ml por 100 g del producto.
¿Cuánto tiempo se forman los cristales en el método de la solución salina de NaCl? ¿Qué fracciones de tamaño se obtienen? ¿Cuánto tiempo debe conservarse el producto en el congelador? ¿Afecta el tiempo de exposición al tamaño del cristal?
¡Gracias a todos!
en dcm no se puede hacer así, hay que usar agua en el proceso de acidificación y luego usar, por ejemplo, ipa para iniciar inmediatamente el proceso de cristalización. Naci no es necesario en absoluto, es una tonteria. y no se puede congelar porque el cristal no saldra en forma de polvo de vidrio y cristal solamente
Brine cristalisation grom yesterday - everything happen in about one hour. But its recrystalisation of 3cmc. At the same time i maked 3 other kind of crystalisation. The biggest crystal (yes one big crystal) is in only vodka. The most beautifull is on 1 ml dh2o/1g powder, boiled few minutes in atomic generator 
and later i used only ceramic lamp
and later i used only ceramic lamp
My latest crystal, from a failed batch which i put in a beaker and used as container to drip remainders of solvents, acids andsoforth. After some weeks i needed the beaker and while cleaning it, i found these.
Now i want to make these on purpose but how... without using loads of beakers as a waste bin
Now i want to make these on purpose but how... without using loads of beakers as a waste bin
Good evening science partners,
Evaporated 4mmc from watter solution and I wasnt happy in crystals colour and shape. I put watter/crystals 1:1 to recrystalize. But its going so fast. In one hour i got crystal film on top of solution in beaker, so evaporation its not possible in that point. Now I see that there is formed crytsals on walls and bottom. So i cut that film a little bit to see what inside, and there is much liquid. What Im doing wrong in these steps?
Evaporated 4mmc from watter solution and I wasnt happy in crystals colour and shape. I put watter/crystals 1:1 to recrystalize. But its going so fast. In one hour i got crystal film on top of solution in beaker, so evaporation its not possible in that point. Now I see that there is formed crytsals on walls and bottom. So i cut that film a little bit to see what inside, and there is much liquid. What Im doing wrong in these steps?
1:1 ratio means you used hot water which you then allowed to cool down. This process crashes out a lot of solid matter, but the crystals are small, tiny and needle-like in fact. If you can slow down the cooling to give them more time they'll be larger. Once the solution cools down, only about a half of the crystals are formed and the other half remain in the solution. You can strain the crystals and let the remaining mother liquor to evaporate further still to grow more crystals.
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- By SunDay
ohh good point, remember one post posted. Closed crystalization beaker, ar put under the pilow too keep warm. So I put in the towel and put under the 250w lamp ~34C. after 12h I will tell results. I need to get hard crystals of mef. If you know more methods to try please tell i will try
You can use more water and a fridge to speed up the process. If the crystals are too small, you can add water, dissolve and repeat the process again.
This can be obtained from a mixture of solvents, but the water should be present.
Result of 150g mmc 1:1 watter. 80celcius solution, put in towels at ~24c. after 12h got ~38g crystals like these, mother liquid must be evaporated to get rest mmc. I dont know what i did, becouse second try of this method was not succesful at all. But i Want to get crystals like these
any advises?
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You need to understand the theoretical yield (how much acid you used) and keep the same proportions for the product, water and temperature so that the result is stable.
- By SunDay
Okay.. Sometimes its differs, becouse I cant achieve full control of reaction(time to time its going better), but mostly for 100g bromo 40ml 28%hcl
But what does crystallization have in common with recrystallization. I already have white, no odour crystals but suggar size and want to make bigger - "like flower". today i got it again flower like. but from 80g got ~20g flowers then put to fridge and all my "flowers" now in the tiny snow flakes
But what does crystallization have in common with recrystallization. I already have white, no odour crystals but suggar size and want to make bigger - "like flower". today i got it again flower like. but from 80g got ~20g flowers then put to fridge and all my "flowers" now in the tiny snow flakes
- By Dr. MMX
Then simply dissolve the solution in the saturated solution of h2o( they are alredy purified once) and perform gradual crystalisation.
You can use the method which will grow them "more attractive" but it takes 1-3 weeks. You can heat solution to 80c and gradually decrashe it to the minimum but do use 3 ml of h2o per 1 g of 4mmc, they will probably grow bigger.
You can use the method which will grow them "more attractive" but it takes 1-3 weeks. You can heat solution to 80c and gradually decrashe it to the minimum but do use 3 ml of h2o per 1 g of 4mmc, they will probably grow bigger.
And again 1:1 watter, towels slow cooling.. and got these. clean but nor nice I want to get crystals like other time... Whats wrong guys?
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This product is even more convenient to use, even if you don't like the size of the crystals.