Can pure sulfur dioxide be dispensed in its liquid form?
A Karl Fischer method for Water in Volatile Solvents requires sulfur dioxide either by:
1. Bubbling gaseous sulfur dioxide through concentrated sulfuric acid
2. freshly drawn liquid sulfur dioxide
The second option definitely sounds less rigorous, but I'm so sure liquid sulfur dioxide is available? If so, please indicate where the liquid sulfur dioxide can be purchased (whether Scotty or other vendor), and if there is any specific procedure for "drawing it freshly."