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Distilling Santovac Diff oil

  1. Feb 3, 2013 #1
    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.


  2. jcsd
  3. Mar 11, 2013 #2


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    Gold Member

    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.
  4. Mar 12, 2013 #3
    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.
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