known as: SO2, sulfurous anhydride, sulfuroxide, sulfurous
oxide, sulfurous acid anhydride reference number (CAS): is
sulfur dioxide? Sulfur dioxide, SO2, is a colorless gas or
liquid with a strong, choking odor. It is produced from the
burning of fossil fuels (coal and oil) and the smelting of
mineral ores (aluminum, copper, zinc, lead and iron) that
contain dioxide dissolves easily in water to form sulfuric acid.
Sulfuric acid is a major component of acid rain. Acid rain can
damage forests and crops, change the acidity of soils, and make
lakes and streams acidic and unsuitable for fish. Sulfur dioxide
also contributes to the decay of building materials and paints,
including monuments and statues. is sulfur dioxide found? of the
sulfur dioxide released into the environment comes from electric
utilities, especially those that burn coal. Some other sources
of sulfur dioxide include petroleum refineries, cement
manufacturing, paper pulp manufacturing and metal smelting and
processing facilities. Locomotives, la