Better late than ever, but the concern with ethylene glycol is more about
absorption by soldermask or even the board then by any chemical reaction. If
the board can be washed with DI water without harming any components etc.,
it should be readily removeable from the surface. If it has been absorbed by
the board or mask you might try baking, but I don't hold much hope on
removing very much.

Leo Roos
----- Original Message -----
From: "Bev Christian" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, September 04, 2002 11:13 AM
Subject: [TN] board contaminated with glycol


> Technettters,
> Say you had a populated, expensive circuit pack that had been contaminated
> with ethylene glycol.  Would you chuck it or clean it?  I seem to recall
> that before I entered the industry that there was a time when some type of
> glycol was used on making printed circuit boards(?).  The reason I mention
> this, is if this were true, can glycols chemically bond at room
temperature
> to PCBs by more than hydrogen bonding, to the point where a water wash,
> saponified or not, would not be able to remove the glycol.  I am assuming
> there are no standoff issues.
>
> regards,
> Bev Christian
> Research in Motion
>
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