I found this in their FAQ list.Careful. I couldn't find any specs on it that confirmed or denied the presence of propane or butane. Both are good at making systems cold but aren't too safe.
Can anyone find specs on Enviro-safe? If it isn't flammable, I might give it a shot.
Is Enviro-safe Refrigerant flammable?
Yes! Enviro-Safe™ Refrigerants are hydrocarbons and flammable to an open flame or spark and is rated as a Flammable Gas 2.