Moja synteza 3-CMC

mithyl2

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to jest świetne.

Jak myślisz, dlaczego zamrażarka dała dziwne wyniki podczas krystalizacji?

Jak myślisz, jak dobrze ta metoda się skaluje?
 

Jesse_Pinkman_

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Ze względu na wodę, kiedy zamarza, skąd powinny pochodzić kryształy?
Zwykła lodówka może działać, ale mam w niej jedzenie i nie chcę jej za każdym razem czyścić.
Naprawdę próbowałem wielu sposobów, aby dostać się do produktu końcowego, a także zmarnowałem wiele rozpuszczalników i 2b3c, ale sposób, który opisałem, działał dla mnie lepiej niż inne próby.
Prawie się pogubiłem w różnych metodach, wszystkie te małe miseczki z różnymi mieszankami stały dookoła, zawsze obserwowałem, która z nich rozwija się dobrze, a która nie.
Na przykład, gdy do krystalizującej wody/proszku doda się lodowatą ipę, od razu pojawiają się białe kryształki, ale nie są one klarowne i jest ich tylko trochę, więc trzeba je ponownie skrystalizować, a reszta musi odparować, patrz ostatnie zdjęcie.
Trzy pozostałe zdjęcia pokazują, co dzieje się z rm w mojej zamrażarce, staje się stałą masą, która topi się w temperaturze pokojowej, ale bez kryształów.
 

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HerrHaber

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it depends on how much material you want to dissolve and the water to alcohol ratio.
 

xoxoxoxo

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Otrzymuję 72g kryształów w postaci 2b3ch
i 76g kryształów w formie 2b4m.
jest to dla mnie naprawdę łatwe do zrobienia.
to samo 4mmc jest lepsze jak 3cmc
na 4mmc normalnie śpię i jem, ale na 3cmc to problem xD
 

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siko

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hello can you explain how you did this?
the whole process please.
 

HardWork

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Is it possible to make 3mmc in powder ? Everyone is talking about acidification with water or acetone and then straight to dish and evaporate. But maybe it is possible to make it like 4mmc. Just putting HcL straight to washed rm and powder forming. Is it possible with 3cmc ? And how to do it with dcm ?
 

SunDay

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I dont want to disapoint you, but no... how much i know ( i read all topics about 3cmc). Just evaporation way
 
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SunDay

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But its strange, becouse everythime when i wash stuff with acetone I put acetone to fridge, and after some time i get 3cmc powder. why its not happening when acidifying with acetone from begining..?
 

HardWork

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I have tried reaction with toluen,and then tried to put only HCL,so I’ve got some powder. But yield was only 25%
 

SunDay

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I tried this also. 1st time my HCL was 80% (it perfectly fits for H2O acidification in proper amount) but when only HCL, everything BURNT :)), and second time with 26-38% so drop was sticky flufy mass(then you need MUCH work to get crystals from this shit, and yeld was about 35%.
By the way, in market there is 28% HCL, it comes from latvia.. that shity HCL makes problem with acidification, purple or emerald color goes on, and really hard to achieve optimal ph. All latvian chem in shops ar shit, so dont be fooled.
 
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HardWork

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Yeah,I have used 26-38% hcl and get 25% yeld.
 

Jesse_Pinkman_

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Same, always had 25-30% after several washing and recrys...there are methods with more yield for sure, but my experiences were always around this amount
 

SunDay

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In first I want to thank all profs for many advices.
And give my little improvement on 3-cmc synthesis for beginers.
Im acidifying in H2O 1:2 keto/H2O, and after acidification I add 1:1 keto/acetone. Evaparotion going 5 times faster. And after recrystalization(1:1 cmc/H2O) i get 60% yeld of big transparent crystals. It takes just 3days in all. Ofcourse i create perfect conditions, 30 celcs and fan to move air(NOT DIRECT TO BEAKERS) if direct then creates film that dont let evaporate solution.
 

saimon99

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What does keto mean? and rm in a recipe ?
 

Torreto

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How long You wait for evaporate before recrystalization?
 

SunDay

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Next time I will try recrystalization in vodka 40%, will write result.
 

keras

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Any difference if I increase evaporation of cmc in water to make crystals apear or leave it naturaly to evaporate?
 

Jesse_Pinkman_

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Some people mean, its better to evaporate without heating, some say its no problem.
I personally tried with evaporating in an oven on 60 degrees but result was not the same. But you can try and look what suits for you
 
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