I knew someone who worked with 100% isopropanol who said there was some safety issue with using it in that, if it ignited, the flame was virtually invisible.
On Mon, Jan 3, 2011 at 4:21 PM, jimlux <[email protected]> wrote: > [email protected] wrote: > >> Most drug store isopropal contain other chemicals to keep your skin from >> drying out. You can buy electronics grade isopropal. Cheap enough ($5 for a >> large bottle) if you have a store that stocks it. Fry's Electronics has it. >> Of course grain alcohol will do the job. >> > > > cheap "grain neutral spirits" aka plain vodka works very nicely for many > cleaning/solvent uses. Except you are paying the $20/proof gallon tax. > > you can also buy 200 proof/100% ethanol at a drugstore, although, > obviously, once you've opened it, it rapidly starts dropping to 95% because > it's quite hygroscopic. We use ethanol to clean spacecraft stuff at work. > I can't remember why we don't use isopropanol... obviously, we can buy it > without any additives so it's not the rubbing alcohol problem. Other space > folks do use isopropanol, but maybe JPL had some bad experience and once > burned, 5000 times shy. Isopropanol forms an azeotrope with a bit higher > water percentage than ethanol, but I wouldn't think that's a big deal. > > The problem with most denatured ethanol is that what they add to denature > it may be fine in perfume or as shellac thinner, but might not be compatible > with your electronics. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
