Solubility and reactivity of sulfur dioxide in various oils.

Physical-chemical interactions of SO2 and soluble particulate matter have been documented in the potentiation of acute respiratory effects in animals. The possible role of such interactions between SO2 and oils will be examined similarly. By a simple electrochemical technique, the solubility of SO2 in various oils (including motor oils) could be isolated from the chemical reactions. Except for the medicinal mineral oil, large differences in both solubility and reactivity were found among the oils. In these oils, far more SO2 reacted than dissolved.