<VV> A/C For 69 Corvair

[BobHelt at aol.com]

In a message dated 7/13/2010 10:23:01 A.M. US Mountain Standard Time,  
gojoe283 at yahoo.com writes:

The  ES12a is non-corrosive if it contacts moisture, therefore no 
pull-down or  vacuuming of the system is needed before charging.  It's 
legal as  
well.



Isn't Envorosafe propane based? 
 
And wouldn't that be highly dangerous to use around spark ignition  engines?
 
And wouldn't it be unsafe to use in Corvairs?
 
Regards,
Bob Helt