Need Freon TF Substitute for Head Cleaning

From: CLASSICCMP_at_trailing-edge.com <(CLASSICCMP_at_trailing-edge.com)>
Date: Tue Jul 11 09:19:51 2000

>Interestingly enough, my "IBM Tape Unit Cleaner" (the real offical stuff!)
>says it contains Trichlorotrifluoroethane AND isopropyl alcohol. This is
>stuff that I use on an 8809 drive, which is a top-loading, lift-the-cover
>sort of a drive, much like a CDC (nee DEC) TU80... if it works for IBM, I
>wouldn't be too concerned.

Stupid chemistry question from someone who took too many physics classes
and not enough chemistry:

What's the difference between trichlorotrifluoroethane and
1,1,2-trichloro-1,2,2,trifluoroethane? Are they different names
for the same stuff, or two different stuffs?

I have some of the 1,1,2-trichloro-1,2,2,trifluoroethane stuff (in the
form of Kodak film cleaner) and it has (from experience) different chemical
properties than alcohol. Isopropyl alcohol seems to loosen up laquer-based
paints; the 1,1,2-trichloro-1,2,2,trifluoroethane doesn't seem to touch
paint at all. So the difference may be important if you're cleaning an
assembly held together with a laquer-based adhesive.

Tim.
Received on Tue Jul 11 2000 - 09:19:51 BST