Is it Safe to Distill Santovac Diffusion Pump Oil in a Common Distiller?

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SUMMARY

Distilling Santovac diffusion pump oil in a common distiller is not recommended due to its specific formulation for low vapor pressure and the risks of oxidation and cracking. Instead of distillation, alternatives such as filtration or treatment with an immiscible solvent are suggested for contaminant removal. If distillation is necessary, careful temperature monitoring is crucial to avoid carbonization. The discussion emphasizes the importance of understanding the oil's properties before attempting recovery methods.

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I am new to this exciting forum.
Mostly involved in applied physics, I need to know if it safe to distill dirty Santovac diffusion pump oil just in a common distiller, exposed to air.
I am worried about eventual oil oxidation/cracking.

Thanks!

Roberto
 
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Why do you need to distill this oil?
It is specifically formulated for very low vapor pressure, not readily distilled.
If it is contaminated, maybe filtration or treatment with an immiscible solvent to extract the contaminant might be simpler alternatives.
If you must distill, watch your temperatures. I don't know how big a margin there is between vaporization and carbonization of that oil.
 
Hello etudiant

Thanks for your comments. I already realized it has a very high boiling temperature, so decided to filter through mole sieve, heating it a bit.
At my country is hard to get and fairly expensive, so I wish to recover the 500 mL I have.
Regards
Roberto
 

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