4mmc crystalization bine method

[kinshasa99]

I tried brine crystalization in NaCl
23g NaCl dissolved in 100ml water and
100 g 4mmc and put it in the freezer but. the method failed.
Now i have 4mmc solid mixed with NaCl(salt)
Does anyone know how to separate salt from 4mmc?

 

[ChemDamn]

I tried brine crystalization in NaCl
23g NaCl dissolved in 100ml water and
100 g 4mmc and put it in the freezer but. the method failed.
Now i have 4mmc solid mixed with NaCl(salt)
Does anyone know how to separate salt from 4mmc?

kinshasa99Уyou need to get rid of the water. you will be left with a mixture of NaCl + 4-mmc. then add the IPA and bring to a boil (per 100g of the mixture 2L of IPA). The 4-mmc will dissolve in the IPA and the NaCl will remain as a precipitate. filter . then distill the IPA. but in general, for this type of crystallization, not NaCl is used, but CaCl - be careful)

 

[subzero013]

Уyou need to get rid of the water. you will be left with a mixture of NaCl + 4-mmc. then add the IPA and bring to a boil (per 100g of the mixture 2L of IPA). The 4-mmc will dissolve in the IPA and the NaCl will remain as a precipitate. filter . then distill the IPA. but in general, for this type of crystallization, not NaCl is used, but CaCl - be careful)

ChemDamnif you add a little hydrochloric acid to the aqueous solution of mef + water, does it normally crystallize at a negative temperature in the freezer? at - 16 - 20 degrees. will the water not freeze along with the mef?

 

[ChemDamn]

if you add a little hydrochloric acid to the aqueous solution of mef + water, does it normally crystallize at a negative temperature in the freezer? at - 16 - 20 degrees. will the water not freeze along with the mef?

subzero013will freeze

 

[ChemDamn]

if you add a little hydrochloric acid to the aqueous solution of mef + water, does it normally crystallize at a negative temperature in the freezer? at - 16 - 20 degrees. will the water not freeze along with the mef?

subzero013dissolve 4-mmc in vodka, or in a mixture of water + acetone (50% / 50%), then it will not freeze. but you will not get large crystals by this method. the crystals will be very small, like snowflakes

 

[subzero013]

will freeze

ChemDamnIn the next topic they wrote that at -8 water would not freeze, did not try at this temperature? Is it worth believe? Crystals are very tightly located to each other, look solid

 

[ChemDamn]

In the next topic they wrote that at -8 water would not freeze, did not try at this temperature? Is it worth believe? Crystals are very tightly located to each other, look solid

subzero013if the concentration of 4-mmc in water is 1g per 1ml or more than 1g per 1ml, then at -8C the solution will not freeze. but already at -10C or lower, the solution freezes

 

[george123]

When I want crystalize I must wait for evaporate all liquid?Much staff stay in water?how much days normal I must wait

 

[ChemDamn]

When I want crystalize I must wait for evaporate all liquid?Much staff stay in water?how much days normal I must wait

george12310-15 hours. this is an isohydric method of crystallization - the supersaturation of the solution occurs due to a drop in the temperature of the solvent (water). about 10-20% 4-mmc will remain in the water. therefore, we do not throw away the water, but evaporate it to extract the remaining 4-mmc

 

[george123]

10-15 hours. this is an isohydric method of crystallization - the supersaturation of the solution occurs due to a drop in the temperature of the solvent (water). about 10-20% 4-mmc will remain in the water. therefore, we do not throw away the water, but evaporate it to extract the remaining 4-mmc

ChemDamnI see Your methods how to crystalize but why people give 2-3 ml per 1 g 4 MMC this will be difference How big are crystals.More solvent more 4 MMC stay on water?

 

[ChemDamn]

I see Your methods how to crystalize but why people give 2-3 ml per 1 g 4 MMC this will be difference How big are crystals.More solvent more 4 MMC stay on water?

george1233-4 ml per 1 g - this is for the isothermal method - when the supersaturation of the solution is achieved due to the evaporation of the solvent. the longer the solvent evaporates, the larger the crystal size. but this method requires a very long time - from 2 weeks to 2 months (depending on the composition of the solvent - the ratio of water / alcohol or acetone)

 

[G.Patton]

I tried brine crystalization in NaCl
23g NaCl dissolved in 100ml water and
100 g 4mmc and put it in the freezer but. the method failed.
Now i have 4mmc solid mixed with NaCl(salt)
Does anyone know how to separate salt from 4mmc?

kinshasa99Interesting way. Where have you found it? Do you want to make 4-MMC salt from free base and NaCl?
Mephedrone (4MMC) crystallization

 

[ChemDamn]

Interesting way. Where have you found it? Do you want to make 4-MMC salt from free base and NaCl?
Mephedrone (4MMC) crystallization

G.Pattonno. this method is different. with NaCl, he wanted to lower the freezing point of water in order to more fully precipitate the 4-mmc hydrochloride from it. but apparently I was wrong. to lower the freezing point of water, not NaCl, but CaCl is used. A 10% solution of CaCl lowers the freezing point of water to -20C. NaCl lowers the freezing point of water only to -3C

 

[subzero013]

no. this method is different. with NaCl, he wanted to lower the freezing point of water in order to more fully precipitate the 4-mmc hydrochloride from it. but apparently I was wrong. to lower the freezing point of water, not NaCl, but CaCl is used. A 10% solution of CaCl lowers the freezing point of water to -20C. NaCl lowers the freezing point of water only to -3C

ChemDamnDoes calcium chloride at minus 20 crystallize or not? What is then the meaning of crystallization if Mephedron will have to be cleaned from CaCl by another crystallization? You can replace it with acetone, he will also lower the freezing temperature, then nothing will need to be separated.

 

[ChemDamn]

Does calcium chloride at minus 20 crystallize or not? What is then the meaning of crystallization if Mephedron will have to be cleaned from CaCl by another crystallization? You can replace it with acetone, he will also lower the freezing temperature, then nothing will need to be separated.

subzero013CaCl at -20C does not crystallize and does not precipitate (it remains in water). I also prefer to use acetone to lower the freezing point of water - in my opinion it's easier and more convenient

 

[G.Patton]

A 10% solution of CaCl lowers the freezing point of water to -20C. NaCl lowers the freezing point of water only to -3C

ChemDamn

You are not accurate, look at these graphics.

with NaCl, he wanted to lower the freezing point of water in order to more fully precipitate the 4-mmc hydrochloride from it.

As I said before, this method looks ineffective

 

[ChemDamn]

View attachment 7842 View attachment 7843
You are not accurate, look at these graphics.

As I said before, this method looks ineffective

G.Pattonthanks for the help info!

 

[subzero013]

CaCl at -20C does not crystallize and does not precipitate (it remains in water). I also prefer to use acetone to lower the freezing point of water - in my opinion it's easier and more convenient

ChemDamnTo secrete salt with other salt is of course a dubious option. Nevertheless, you can try on small number. Tell me what you have achieved the temperature minus 8 degrees for crystallization from water? In household freezers, the temperature starts from minus 12 - 14, in laboratory from minus 10. Am I looking bad or is there any non -standard way?

 

[ChemDamn]

To secrete salt with other salt is of course a dubious option. Nevertheless, you can try on small number. Tell me what you have achieved the temperature minus 8 degrees for crystallization from water? In household freezers, the temperature starts from minus 12 - 14, in laboratory from minus 10. Am I looking bad or is there any non -standard way?

subzero013the answer is simple: winter, sub-zero temperatures…

 

[ChemDamn]

To secrete salt with other salt is of course a dubious option. Nevertheless, you can try on small number. Tell me what you have achieved the temperature minus 8 degrees for crystallization from water? In household freezers, the temperature starts from minus 12 - 14, in laboratory from minus 10. Am I looking bad or is there any non -standard way?

subzero013Minus 10 fits too