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4-Methylmethcathinone crystallization conditions:
- Constant temperature 22-24 ºC;
- Dry air (<40% relative humidity);
- Container volume;
Simple method
Isopropyl alcohol (IPA) or ethanol solution with water is prepared in ratio 30/70, 50/50, 70/30. Proportions are adjusted according with a tasks and a crystallization container volume. Time of crystallization and crystal size depend on amount of water in solution. The more water, the bigger the crystals and longer crystallization procedure. Average proportion of mephedrone hydrochloride to water is 1 g per 2-3 ml of solvent. The solution is heated to a light boiling (small bubbles). Then mephedrone hydrochloride is added in portions so that it has time to dissolve. Next, the product is dissolved, boil for a couple minutes and the solution is poured into a crystallization dish. Plastic and glass dishes are mostly used. The solution layer with height 1-2 cm height gives a fraction with a sugar crystals size. The solution layer 3-5 cm height gives an up to 5 mm fraction. Air-conditioned boxes, fume hoods and air dryers can be used for this procedure. Wet crystals are obtained after solvent evaporation, which are well dried under dry air flow, infrared radiation (IR lamp or IR heater) or in a vacuum desiccator.
16082
16083
16085

Gradual cooling method
Dfhgmv

Сrystallization centers are formed in the solution, when solution is evaporated for 50% or more. To accelerate the crystallization process, the mixture is gradually cooled. A crystallization dish is placed into a refrigerator (4 ºC) for 8-12 h, then it is moved into a freezer (-17-20 ºC) for 8-12 h.

Rotary evaporator crystallization technique (fine fraction)
Mephedrone hydrochloride is dissolved in a solvent in the proportion of 1 g per 1 ml. The solution is placed in the rotary evaporator flask and distilled. The deeper vacuum, the lower the boiling point of the solution. Large amount of fine crystals are obtained by this way.

It is possible to evaporate the solution with a hot air fan from a crystallization dish in the
rotary evaporator absence case. In this case, glass or ceramic heat-resistant glassware is used. It is important to prevent overheating of the product and, as a result, its deterioration.

Crystallization technique with rapid cooling
Mephedrone salt is dissolved in hot water in the proportion 1 g per 1 ml in a boiling hot water. Ethanol 0.5 l or other polar organic solvent is added after complete dissolving. The hot solution is poured into a plastic containers to fill ½ or 2/3 volume, sealed and cooled in a freezer at -17-20 ºC. There is a chance that the product will not precipitate out. In this case crystals are filtered and the solution is additionally evaporated.

Сrystallization method in brine solution
Sodium chloride (NaCl) 23 g is dissolved in distilled water (H2O) 100 ml. Mephedrone hydrochloride 100 g is dissolved in this brine solution, the solution should be heated for better solubility. The solution is poured into a plastic container to fill ½ or 2/3 volume and sealed tightly. Crystals are grown at low temperature -18 ºC. If the temperature is cooled below -18 ºC, the brine solution is frozen.
 
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justlooking403

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thanks for sharing man. what is the average yield of the final product with the proportions you use?
 

dark_side_of_chemistry

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want to crystallize 3cmc. which solvent is best to use for the freezer method. I understand that I dissolve 1g 3cmc in 1 ml of water .. I understand that 0.5 of the solvent is to be equal to how much the product will dissolve. e.g. for 1kg of 3cmc in 1l of water, 0.5l of solvent is added? what do you think about crystallization in dcm?
 

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want to crystallize 3cmc. which solvent is best to use for the freezer method. I understand that I dissolve 1g 3cmc in 1 ml of water .. I understand that 0.5 of the solvent is to be equal to how much the product will dissolve. e.g. for 1kg of 3cmc in 1l of water, 0.5l of solvent is added? what do you think about crystallization in dcm?
BadbadylNo DCM crystallization. Only water+alcohol (vodka), water+acetone. Proportions - 1:1 - 1:3 powder:liquid. Percentange for acetone/alcohol in water depends on the quality and purity of the powder than dirtier, the more. The growth rate and size of crystals depends on the total amount of solvent
 
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dark_side_of_chemistry

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Ok, that is, 0.5l of acetone will be in a liter of water? We assume the gunpowder is clean
 

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Brine cristalisation doest give expected results (crystal is not as transparent as crystals on ur pic, its one solid rock with white coating). Any idea what mistake i did?
 

dark_side_of_chemistry

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Brine cristalisation doest give expected results (crystal is not as transparent as crystals on ur pic, its one solid rock with white coating). Any idea what mistake i did?
Jamrozhow fast did you get crystal this method? can you show in the picture what crystal you came out with?

"I invite you to my new post in which I will present my ideas of mef production devices ... I will also be happy to get to know your ideas. "
 
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Brine cristalisation doest give expected results (crystal is not as transparent as crystals on ur pic, its one solid rock with white coating). Any idea what mistake i did?
JamrozCrystals may differ in shape and appearance depending on the method of their production. The crystals in the photo are obtained from a 50/50 alcohol/water solution in the proportion of 3ml per 1g of mmc in a dry room.
If you want to experiment with crystallization, send me a PM, and we'll figure out the most important nuances.
 
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WhalterWhite

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Hello.If I have 100 g of ready-made 4mmc powder, how much is the product after crystallization?
 
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Hello.If I have 100 g of ready-made 4mmc powder, how much is the product after crystallization?
WhalterWhiteIt depends on the purity of the mephedrone powder. The crystal is initially a pure fraction of the product and as the solvent evaporates, dirt creeps in. If the powder is 98-99% pure enough, you will get crystals of ~90% of the powder mass.
 

dark_side_of_chemistry

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Crystals may differ in shape and appearance depending on the method of their production. The crystals in the photo are obtained from a 50/50 alcohol/water solution in the proportion of 3ml per 1g of mmc in a dry room.
If you want to experiment with crystallization, send me a PM, and we'll figure out the most important nuances.
Marvin Popcorn Suttonso I understand that the brine option was used: 50ml h20 / 50ml alcohol and 23g Nacl, right?
 

Bazooka90

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Anybody knows how to check the purity of 3cmc and what solvent is better for cleaning? Can i clean it with acetone?
 
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Bazooka90

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I
No DCM crystallization. Only water+alcohol (vodka), water+acetone. Proportions - 1:1 - 1:3 powder:liquid. Percentange for acetone/alcohol in water depends on the quality and purity of the powder than dirtier, the more. The growth rate and size of crystals depends on the total amount of solvent
William DampierI have recived 200g of 3cmc very dirty, i put it in the mixer to make it powder, i have cleaned it with acetone, after that i put the 3cmc powder in 200 ml of water in order to dissolve it and add 400 ml of etilic alcohol. The crystalization did appeared but the color is very brownish. Any idea why?
 
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I

I have recived 200g of 3cmc very dirty, i put it in the mixer to make it powder, i have cleaned it with acetone, after that i put the 3cmc powder in 200 ml of water in order to dissolve it and add 400 ml of etilic alcohol. The crystalization did appeared but the color is very brownish. Any idea why?
Bazooka90I advise you to read this topic. I think the 3mms is cleaned in a similar way.
 

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Hi i have a question.

If I'm going to do the synthesis of mephedrone. Once I have my yield of this synthesis. What's the difference between selling it after the first synthesis and when I crystallize the mephedrone I've made.

Is there a huge price difference? is it's worth or can i just sell it in pure form after the 1st synthesis without cutting it up with anything.

The goal is to eventually sell in larger quantities. But I'm curious what the difference would be if I went for the crystallization or not.

Thanks
 

Venom2021

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4mmc 100g
woda 200ml
aceton 50ml
witamina c 3g

heat the water to 60 ° add 4mmc, stir until it dissolves, add acetone and add vitamine c keep the temperature at 60 °. Pour the solution into a bowl, can be glass or plastic, and in a few days at 22 ° -25 ° you will get a crystal in the form of sticks. thank you so much for your attention
 

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Hi i have a question.

If I'm going to do the synthesis of mephedrone. Once I have my yield of this synthesis. What's the difference between selling it after the first synthesis and when I crystallize the mephedrone I've made.

Is there a huge price difference? is it's worth or can i just sell it in pure form after the 1st synthesis without cutting it up with anything.

The goal is to eventually sell in larger quantities. But I'm curious what the difference would be if I went for the crystallization or not.

Thanks
KHaafiiRecrystallized product more pure and, hence, potent. Also, you get large beautiful crystals, which are extremely attractive for consumers.
 

Dxrk

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So, what method is the best one for time/quality?
 

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SonicNL

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Hello, depends on what do you need (large crystals or small ones)
G.PattonHello, what is the best way to obtain large crystals, if the crystallization time would be a maximum of 7 days?
 
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SonicNL

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Hi. You have to carry out recrystallization and cool a salt solution down as slower as possible without shaking a crystallization dish.
G.PattonThanks. What method would you prefer to use in this case? IPA/water 50/50 good at +- 18 C?
 
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