The plasticiser also leaches out under normal atmospheric conditions esp.
sunlight and is probably the main cause of the film that develops on the
inside of the glass.
PaulH.
----- Original Message -----
From: James H. Nazarian, Ph.D. <microdoc@apk.net>
To: Bullwinkle <yd3@nvc.net>
Cc: mgs <mgs@autox.team.net>
Sent: Wednesday, March 07, 2001 2:37 PM
Subject: Re: Wiring basics - Oh No! Big point missed!
> Ammonia also reacts with vinyl plasticisers found in dashboards, seat
> panels, rear soft top wind screens, and the colorful coatings sometimes
> found on electrical wiring. Eventually the insulation will be rendered
> hard and brittle. Ever use any of the various flavors of window cleaner
> containing ammonia on your car's windows? Ever notice a white powdery
> film on the inside of your windshield a few days later? That's the
> residue from the reaction between ammonia and vinyl plasticiser.
>
> Jim
>
> Bullwinkle wrote:
>
> > FWIW:
> >
> > Ammonia is an excellent cleaner of copper. However, I've read
> > that it can cause "hydrogen embrittlement" (Spell checker doesn't
> > know that word, and I can't find it in the dictionary) and should
> > not be used to clean cartridge cases. However clock makers use
> > it to clean large brass clocks.
> >
> > Blake
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