I would say right offhand that freonjoe or Admin is our closest resident "experts". Here is one of his posts on freon, maybe your answer is here.
http://www.scrapmetalforum.com/scrap...ant-msdss.html
http://www.scrapmetalforum.com/scrap...y-warning.html
http://www.scrapmetalforum.com/lets-...-recovery.html
http://www.scrapmetalforum.com/off-t...-disposal.html
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