Date:         Sun, 20 Jun 2010 15:40:22 -0500
Reply-To:     Tom Hargrave <thargrav@HIWAAY.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Hargrave <thargrav@HIWAAY.NET>
Subject:      Re: Freeze-12 and other A/C supplies
Comments: To: Robert Fisher <garciasghostvw@GMAIL.COM>
In-Reply-To:  <003401cb10b4$8f044310$ad0cc930$@com>
Content-Type: text/plain; charset="UTF-8"

I look at it this way.

All of these products are far less explosive than the propane plumbed in to power your stove & heater. They are also far less explosive than the gasoline sloshing around in your gas tank!

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Robert Fisher
Sent: Sunday, June 20, 2010 3:10 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Freeze-12 and other A/C supplies

--snip--
turns out that Freeze 12 seems not to have propane or other flammable component, but there are good reasons that regulatory agents rule against a product and that manufacturers recommend that things be done in a certain way.
--snip--

Freeze-12 doesn't have propane but according to the MSDS the R142b component is "extremely flammable" and breaks down into some pretty nasty gases due to "thermal decomposition". 
Freeze-12 is on the EPA's "acceptable subject to use" list, as well as some others that have less than 5% isobutane. Perhaps they feel that at level the explosive potential is low enough to be acceptable? I haven't seen where it was illegal in some individual states; does anybody have a link to that?

I guess you picks yer poisons...

Cya,
Robert