Carbon tetrachloride was taken off the market (and replaced with
Tri-chloro-ethane (TCE)) because it is a known carcinogen. Of course,
in time they discovered that Tri-chloro-ethane was also a carcinogen,
and I believe it has also been pulled. However, they still happily mess
around with per-chloro-ethane, or perc, which dry cleaner's solvent.
I'm betting it to is a carcinogen. The big advantage of all of these is
they are non-flammable under most circumstances, while acetone and
lacquer thinner, toluene and many others are very flammable if not
explosive, so they were supposed to be "safer"...
CFC or trichlorotrifluoroethane is also known as "Freon" found in older
refrigerators and air conditioners, and yes, it is indeed one of the
worse of the halogenated chemicals for damaging ozone.
Art
Art
Alan Eckert wrote:
> Probably the same stuff as in the Nortronics VCR cleaner I bought many years
> ago and still have. It says "contains trichlorotrifluoroethane." In other
> words, ozone-depleting CFCs, which is why you can no longer buy them.
>
> ----- Original Message -----
> From: "Bob Shomler" <bobf1@shomler.com>
> To: <alan@aeckertphoto.com>
> Sent: Friday, January 24, 2003 1:24 PM
> Subject: [filmscanners] Re: OT-Restoring rubber rollers on printers...
>
>
>
>>I wish I still had the TEAC tape cleaning kit I had back in the early 80's.
>>I have no idea what the rubber cleaner was that was in it, but it removed
>>all manner of junk from cassette and RTR pinch rollers, and did a brilliant
>>job of restoring the rubber to a useful condition. I imagine the same
>>
> stuff
>
>>would work wonders on printer rollers. Maybe someone else on the list
>>remembers what the product is? I just remember it reeked and was NOT the
>>basic alcohol most cleaners use.
>>
>>Rob
>>
>
> Weren't some of the cleaners then TCE? (In the 60s I recall some that were
> Carbon tet; I think they were gone by the 80s.) Some others in the 60s and
> 70s were MEK, but I don't recall them being used for rubber or mag tape
> parts.
>
> --
> Bob Shomler
>
>
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