On Tue, Sep 13, 2011 at 3:34 PM, Sergey Dryga wrote: > Maybe baby oil (light mineral oil), sold in pharmacies? The lubricant > does not > have to be polar to be soluble in ethanol, btw. > It doesn't, but it will have an extremely low solubility. Hydrocarbons (unless they have very long chains) will not be very soluble in polar solvents. Long chain non polar hydrocarbons may be slightly soluble due to London dispersion forces. And baby oil is a good suggestion. I'll see if I can get some of that. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .