A few associated use Ecogreen and have never had any problems with it after a distillation. One friend did say the last tank he got smelled a little different than the others he had, but again no problems after distilling.
In our system we have been using canned "Puretane n-Butane 99.99% 7x Filtered, Triple Refined" because it is a little bit easier for us to acquire and keep a few cases on hand for refills.
I know my soul felt soooo low when I disposed of my empty master's at the dump. I stopped a long time ago, and am back to my happy self ... lol. FIND ANOTHER WAY BROTHER!!!