Josef wrote:... At this point I am heating untill fumes come off then removing the solution outside until it cools down before heating again. I will install a fume hood as soon as sufficient funds become available.
Forgive me Josef, but if you don't take this very seriously the funds for you hood will be from your life insurance policy.
I know a guy who use SO2 out doors and thought all was well, until the nose bleeds started. Trips to ER twice and finally they cauterized the interior of nose in time to save his life. Some of these fumes corrupts the soft tissue in the nose, throat, and lungs and you don't notice it until it is to late.
WIZ
