Distillation of Tetralin (1,2,3,4-Tetrahydronaphtalene)
Hey there!
I'm in with OC for a while now. Working autodidactic, i had to face the following problem:
Got around 600ml of Tetralin (previous 99,5%) in a "slightly" larger bottle here, which was stored for about 3months, without lightinfluence.
According to some instructions, redistillation of the solvent increases the process-yield about 20%, compared to commercial grade solvent.
'cause of Tetralin being very high-boiling and also prone to peroxide-forming, it might become difficult, to properly distill it under given
conditions:
- simple watercooled distillation Bridge
- 1000ml roundbottomflask heated by 3-stage hemispherical heating mantle
- 500ml roundbottomflask coold with ice-bath
- vaccuum by water pump jet
I could not find any information about possible impurities, besides the peroxides.
It would be very helpful to have some advice for distilling highboiling, peroxid containing solvents.
Is Cu2O suitable for destroying the peroxides ?
Will other impurities be more volatile than the Tetralin ?
Is an additional dephlegmator needed, or will the separation be fine with normal distillation-bridge ?
Thanks in anticipation,
with best regards,
Mythrilium 
[Edited on 5-8-2013 by Mythrilium]
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