I use r-134 which cools marginally and if I thought
es-12 would cool better and I was switching from r-12
I would not worry about the burning issue.   First of
all the amount of gas in comparison to the propane you
are already carrying is small.   It is in a sealed
system without oxygen.   If a leak develops the gas
will dissipate quicky.
If you are going to worry about es-12 you should not
use the propane and for that matter the gas in your
tank which represent a much greater hazard.
             gary

Date:    Fri, 28 Jun 2002 15:34:03 -0400
From:    wb6otg <wb6otg@INTREX.NET>
Subject: Re: ES-12 Refrigerant - Caution

If its flamable its NOT legal for automotive use.

Bill
---------------------------------
 Having read the original posts on this material, and
in the process of
adding
 A/C to a westy, I purchased some. I ran the info by a
friend
knowledgeable in
 A/C and other matters associated with this field (I
am not an expert)
just to
 be sure it was safe. It is not. This is a mix of
propane and butane.
It may
 be legal but certainly not something I want in my
van. A real issue is
if
 having the AC serviced by a tech unfamiliar with this
material. He may
use a
 flame type leak detector with catastrophic results.
 Propane was used many years ago as a refrigerant
because of its
outstanding
 thermal properties - but one drawback - it explodes
when ignited
(think
 fuel/air bomb). Thats why they don't use it anymore.
I thought I would
post
 this just in case some one was considering using
ES-12. Just my
opinion, hope
 it helps.

------------------------------

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