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Mefedron (4MMC) kristalizasyonu
Herkese merhaba!
Başlangıçta unum yoksa NaCl kullanarak hazır sulu bir mef çözeltisini nasıl kristalize edebilirim? Diyelim ki, diklorometan içinde bir mef bazım var ve onu 100 mef başına 135 ml su ile asitlendireceğim, mef'i suda çözerken - mef'i una koymuyorum, hemen suya koyuyorum
NaCl hangi aşamada ve hangi oranlarda eklenmelidir. Üstteki tecrübeye göre yazar 100 gram mef için 23 gram diyor ama 100 ml suda çözünmüş 100 gram mef var. Ve benim oksidasyonum 100 g ürün başına 135 ml gibi bir rakamda gerçekleşiyor.
NaCl tuz çözeltisi yönteminde kristaller ne kadar sürede oluşur? Hangi büyüklükte fraksiyonlar elde edilir? Ürün ne kadar süre dondurucuda tutulmalıdır? Maruz kalma süresi kristal boyutunu etkiler mi?
Hepinize teşekkür ederim!
Başlangıçta unum yoksa NaCl kullanarak hazır sulu bir mef çözeltisini nasıl kristalize edebilirim? Diyelim ki, diklorometan içinde bir mef bazım var ve onu 100 mef başına 135 ml su ile asitlendireceğim, mef'i suda çözerken - mef'i una koymuyorum, hemen suya koyuyorum
NaCl hangi aşamada ve hangi oranlarda eklenmelidir. Üstteki tecrübeye göre yazar 100 gram mef için 23 gram diyor ama 100 ml suda çözünmüş 100 gram mef var. Ve benim oksidasyonum 100 g ürün başına 135 ml gibi bir rakamda gerçekleşiyor.
NaCl tuz çözeltisi yönteminde kristaller ne kadar sürede oluşur? Hangi büyüklükte fraksiyonlar elde edilir? Ürün ne kadar süre dondurucuda tutulmalıdır? Maruz kalma süresi kristal boyutunu etkiler mi?
Hepinize teşekkür ederim!
dcm'de bunu böyle yapamazsınız, asitlendirme işleminde su kullanmanız ve ardından hemen kristalizasyon sürecini başlatmak için örneğin ipa kullanmanız gerekir. Naci'ye hiç gerek yok, bu saçmalık. ve donduramazsınız çünkü kristal sadece cam ve kristal tozu şeklinde çıkmaz
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.
↑View previous replies…
- 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
- By William D.
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.
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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- By William D.
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
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?
Last edited by a moderator:
- By William D.
This product is even more convenient to use, even if you don't like the size of the crystals.