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I had trouble finding info on how to destroy or neutralize phosgene. Im not doubting you guys but do you have any documentation or references to back up your claims?

Gimp, that should release some of the refrigerant but you'd get out alot more by placing the oil under a vacuum. And I would be very careful on how hot you get that oil.

Well umm we dont know enough about where the oil came from to make a final decision. If it was used with a non chlorine based refrigerant it should be fine. To error on the safe side I was thin it was another flammable fuel.

Ive been doing some reading up on phosgene and from what I can find its R11, R- 12, R- 113, R- 114 that once burned makes phosgene. R-134a and R-22 dont have the chemical make up to turn into phosgene once burned. That being said when you burn any refridgerant you get some nasty stuff.

Heres even more technical info for people to wrap there heads around http://www.che.ufl.edu/shah/misc/Publications/1997/Shah%201.pdf If you read it states that different refrigerants and refrigerant oils have different absorption and desorption rates. So the only way to truly know how much...

No, it does not. It states the EPA's allowable limits. I doubt most people on this board who have burned used oils from various sources are up to EPA guidelines. If it was me I wouldn't bother with heating the oil first id let it sit in an open container stir it up a few times then burn it maybe...

I would call it a professional opinion based on over 10 years of specialized training and real world experience. Here is a PDF on how to make your used refrigerant oil EPA compliant for burning. http://www.p2pays.org/ref/13/12346.pdf

I just talked to my brother who is a Journey Pipe fitter who specializes in refrigeration systems. According to him unless you drain the oil from a running system straight into a fire there is little to no chance of the oil retaining refrigerant. If you want to be overly cautious you can let the...

FYI it has a flash point of 187C or 370F, not sure what the auto ignite temp is.

http://www.sonneborn.com/products/pdf/Suniso_4GS-MSDS.pdf