kris_1108 (Hive Bee)
06-26-04 15:54
No 515622
       XYLENE for re-x?     

As an alternative to acetone in the recrystalisation process, could xylene be used? If I were to try this, the product to be re-x'd would be added to a flask, along with a very generous amount of xylene. I would heat the NP to a few degrees below the BP of the alcohol that is to be used. After that, alcohol would be slowly added, dropwise, untill the pseudo/meth dissolved into the solution, which would be slowly cooled over 12/24hrs.

Is there any reason why this wouldn't work? 		 
 
 
 
    geezmeister
(Of Counsel)
06-26-04 16:58
No 515631
       will work     

It will work. You'll probably want to rinse the crystals in acetone... but your taste in xylene may be different than mine...laugh You will need to give it more time than you would a mix with acetone.
mostly harmless 		 
 
 
 
    gluecifer69
(Hive Bee)
06-26-04 20:23
No 515700
       Would there bee any advantage to using Xylene...     

Would there bee any advantage to using Xylene as opposed to Acetone?
absorb what is useful, reject what is useless 		 
 
 
 
    jemma_jamerson
(Hive Addict)
06-26-04 20:57
No 515708
       water recystalisation     

mate why not just use water?

it works best in my opinion
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    kris_1108
(Hive Bee)
06-26-04 21:44
No 515710
       H2O     

Would there bee any advantage to using Xylene as opposed to Acetone?



Probably not laugh. I was just wondering if it would work. If I had something to recrystalise, i would probably try it, and see if there are any differences vs. a tone re-x. Maybe the crystals would be bigger/smaller/different shapes? Maybe not..

 
 
 
 
    geezmeister
(Of Counsel)
06-27-04 07:24
No 515785
       advantage     

Would there bee any advantage to using Xylene as opposed to Acetone?



Depends on what contaminants are in with the meth. There are situations where using xylene or tolly will provide an advantage, and this is particularly true when recrystallizing pseudo HCl.

mostly harmless 		 
 
 
 
    ChemoSabe
(Hive Addict)
06-27-04 10:36
No 515840
       OK for Pseudo - Questionable for Meth     

A big disadvantage from my POV concerning Xylene is the obnoxiousness of the odor it has combined with its very slow rate of evaporation. Leftover xylene is not something that you want going in your body in any amount. Not that you'd want any acetone, methanol or isopropanol either but at least those can be quickly and quite thoroughly removed from your endproduct with rinsing and heat.

Xylene is more challenging to fully do away with.

Personally I would not use it for meth.

For Pseudo going into a RXN it would bee no big deal though.
It's time to bone up on your 5 card stud.