Possible safety hazard?

[Deadhead22]

Is it a possibility that leftover Noah could be absorbed into naphtha would this be a safety hazard (dumb question I geuss). I think there may have been some on the side of the jar that a freeze precip was done on should I be concerned ? What would it look like if mixed with dmt and what could I do to fix it?

 

[ChemisTryptaMan]

redissolve the product in some naphtha, and pour the solution into a new container. The lye is insoluble in naphtha and wont carry over, then just put it back in the freezer.

 

[benzyme]

or dry the naphtha over magnesium sulfate

 

[Deadhead22]

Ok we'll I don't understand how it happend in the first place. Is there a maximum saturation level for naoh in water?

 

[ChemisTryptaMan]

Unless you had lye on the jar already, or you had some of your aqueous layer carry over. I don't think you have anything to worry about. I always re-x my crude products though as this is the only way to ensure that you have as clean a product as possible. It's quick and easy so it should be done. I doubt you have lye on your freeze precip jar unless you used that jar for storing your lye or something.

 

[Deadhead22]

What is re x?

 

[ChemisTryptaMan]

recrystallization, check the faq for a great outline on the process.

 

[benzyme]

there will always be drops of aqueous solution bound to glass, silanol groups h-bond readily, so decanted NPS often has some residual aqueous solution. it's generally a good practice to dry the NPS.

 

[Al Dimentiz]

or dry the naphtha over magnesium sulfate

Could you explain this process on more detail?


Never mind... A quick search explained the process...

A better way to dry it is chemically using anhydrous magnesium sulfate. First dissolve your DMT in a tiny amount of warm naphtha or heptane (no hotter than 55 C, check it with a thermometer). Use just enough to dissolve the DMT. Then add anhydrous magnesium sulfate until the anhydrous magnesium sulfate no longer clumps when you add it. It absorbs the water and forms clumps when there’s water present only. Mix thoroughly and then filter out the anhydrous magnesium sulfate. Then freeze precipitate the DMT. A tiny bit of DMT will be present in the anhydrous magnesium sulfate, which you can recover by pouring a little more naphtha through it

 

[benzyme]

even epsom salts work (MgSO4 * 7H2O, magnesium sulfate heptahydrate), but if you want to make it anhydrous, put the epsom salts in the oven at 450 F for a couple hours.
it will change consistency from [large] clear salt crystals to a hard slab of white fine crystals. makes good desiccant for a desiccator too.