As a rule, mixing solvents is fairly predicable. There are exceptions, so
maybe MEK does not act as aggressively as Methanol as a small percentage of
the mix with Ethanol.
Note that MEK is often the principal agent in ABS and PVC pipe cleaners, and
maybe in the solvent cements themselves. MEK is nasty stuff.
----- Original Message -----
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, November 29, 2006 4:50 AM
Subject: Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
> On Wed, 29 Nov 2006 10:17:30 +0100, Syd H. Levine
> <wireline@...> wrote:
>
>>
>> As to the denaturing agent being Methyl Ethyl Ketone (MEK) in Europe,
>> that
>> is rather interesting. MEK is VERY aggressive against ABS and PVC. It
>> would be hard to believe that Ethanol denatured with MEK would not be as
>> bad
>> as Ethanol denatured with Methanol with respect to attacking ABS.
>
>
> I can not be sure if it is is my denatured ethanol, since i do not have a
> MSDS for the brand i currently use. But all MSDS i've downloaded listed
> MEK, and i used several brands over the years, so it is highly likely some
> if not all contained MEK.
>
> I have used it on ABS countless times, and never observed any trouble like
> surface damage in any way.
> Maybe the low percentage renders MEK harmless.
>
> ST
>
>
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