On Mon, Apr 24, 2006 at 01:13:43AM +0200, Bill Sloman wrote: > At 23:54 23-4-2006, you wrote: > >On 4/23/06, Karel Kulhavy <[EMAIL PROTECTED]> wrote: > > >> >Is it true that PCB's should be washed by isopropyl alcohol and > >not > ethanol because ethanol has small molecules that creep into > >the part > cases and wreak havoc >>there? > > > > >>I've never personally heard this, but it is feasible I suppose. > >Ethanol is only C2H3OH, which is a much smaller molecule than isopropanol. > > Ethanol is CH3.CH2.OH . Iso-propanol is CH3.CH(OH).CH3, which is one > CH3 group larger - not a vast difference. Both are much larger than > water - HOH - and nobody seems to worry about water creeping into > the parts, or a least not since they perfect the plastic package some > thirty-odd years ago.
And if it goes in, it will also go out quicker that water, right? It disappears in front of the eyes. CL<
