From: utzoo!decvax!harpo!ihnp4!ihuxm!prgclb
Newsgroups: net.audio
Title: Re: Tape Deck Upkeep
Article-I.D.: ihuxm.142
Posted: Tue Jan  4 10:07:09 1983
Received: Wed Jan  5 01:32:16 1983
References: whuxk.134

Bill Mitchell had a minor error in his article on tape deck
maintenance.  He said that Freon is trichlorethylene (or vice-versa).
Freon is a *fluorinated* hydrocarbon,
whereas trichlorethylene is a *chlorinated* hydrocarbon.
Freon, by the way, is a trademark (not sure what company --
I think DuPont) for a *family* of fluorinated hydrocarbons
predominantly used in refrigeration, and until
the recent ozone scare, as an aerosol propellant.

Trichlorethylene, on the other hand, is a specific chlorinated hydrocarbon
compound with two double-bonded carbons and three chlorine atoms.
It, and its cousin perchlorethylene, is used as a dry-cleaning and
grease-removing fluid.
Available in hardware and paint stores under a number of
trade names (e.g. carbo-chlor), it's great for cleaning, say, dirty bicycle
chains, but I'm not so sure about using it on tape heads
(unless, of course, your tape deck owner's manual says it's okay).

Bill, don't take this as a put-down of your article --
it was complete and comprehensive.  Just thought I'd
take this chance to brush up on my organic chemistry . . .


				Carl Blesch
				Bell Labs - Naperville, Ill.
				IH 2A-159, (312) 979-3360
				ihuxm!prgclb