Looking for a vendor crystallization in 15 hours?4-Mmc

[zetvasa9]

Hello dear colleagues, who can tell me about crystallization in 15 hours? A person claims that this is real, but I have not found a single method for obtaining exactly this product and for

 

[Dr. MMX]

I crystalize my product usuallyabout between 1h up to 3h, it depends on some factors. I usually finish finish the process at 25c, but sometimes it may be 35c - so the time is shorter.
Method is in the basic laboratory techniques - I have uploaded such book I do recommend to visit our wonderful Library!

 

[zetvasa9]

I can't find it, could you give me a link to the methodology? I'll be very grateful to you.

 

[Dr. MMX]

begginer's book - organic chemistry laboratory techniques * sorry - its the title.

 

[Dr. MMX]

The method doesnt exist, its about understanding the crystalization.
I usually perorm water crystalization for such amount of time becasue my product is pure. It doesnt need have more solvent to "manipulate" crystals's shape by that and letting it evaporate.
In proper technique you dont evaporate anything (ofc sometimes... nobody is the machine to hit perfect saturation point each time
in the screen you send it was cleaned with acetone after it evaporated( used for washing, acetone usage changes its shape - they are not such sharp as I usually know from experience that could be ) , in the back we can see different colors than presented in the hand. Simply waiting too long usually changes it.
Here its the temperature that decides about the solubility, so you can decide when to remove. I believe its better to remove in most optimal time... to not wash with anything later.
If i had not pure product i would probably choice some solvent mix than just water in the case of what i know about the technique performed in 2009, if you are sure what reagents you have and you made sure they are pure - there is nothing wrong that can happen (if nothing happened later)
Thats why I use water.

So simply I do recommonend reading the book - its the best start - really.

 

[Dr. MMX]

If you apply the knowledge in the practice, analyze the situation, set ur goal and by that find your methodology, it will be easier and easier each time you need to perform such a task

 

[Dr. MMX]

Please use English. Its English language forum. If you dont speak it please translate, so others who speak and follow the rules dont need to do it instead . I have alraedy told you, it all depends on the situation. Usually its purity of the whats left after acification.
But if its very not pure... Try to remove it at 45c, you will ahve a lot of lower yield, which can be recovered in next batch of crystals. I cant tell you anything as you dont say any details reagardin the issue