1) "Sulfur burns with a blue flame that emits sulfur dioxide, notable for its peculiar suffocating odor." "Sulfites, derived from burning sulfur, is heavily used to bleach paper. It is also a preservative in dried fruit." Source and further information: http://en.wikipedia.org/wiki/Sulfur 2) "The primary product from combustion of sulfur is sulfur dioxide, SO2. However, other oxidation states are usually formed. When reported in this document, these compounds are jointly referred to as SOx, or oxides of sulfur. SO2 means sulfur dioxide, and SOx means the combination of all such emissions reported on the basis of the molecular weight of SO2." Source and further information: http://www.epa.gov/ttn/chief/ap42/c00s00.pdf 3) "Sulfur oxides are produced during the combustion of sulfur-containing fuels, primarily coal and fuel oil. When sulfur oxides combine with water vapor and oxygen in the air, the result is a mist of sulfuric acid which is highly corrosive and irritating. Sulfur oxides can also yellow the leaves of plants, corrode certain stones and metals, irritate the upper respiratory tract and injure lung tissue." Source: http://www.answerbag.com/q_view/498517