---
cited_by: []
definition: |-
  Sulfur dioxide (SO2) is a non-inflammable colorless gas. SO2 is
  usually oxidized by ozone and hydrogen peroxide to form sulfur trioxide, a
  secondary pollutant that is extremely soluble in water.  Droplets of
  sulfuric acid (acid rain) are formed when sulfur oxides are present in
  the atmosphere.  The production of SO2 originating from coal-fired power
  plants and other fossil fuel combustion is largely responsible for
  the damage caused by acid rain.  Volcanic eruptions also provide a source
  of sulfur dioxide in the atmosphere but are insignificant when compared
  to anthropogenic sources. [Science; v265; 497-9; 1994.] [Nature;
  v366;327-9; 1993.]
href: https://data.globalchange.gov/gcmd_keyword/f5717312-c3ca-4492-a166-9f17c6d9b273.yaml
identifier: f5717312-c3ca-4492-a166-9f17c6d9b273
label: SULFUR DIOXIDE
parent_identifier: b80a242d-d5f5-4a5f-976c-6f6fe2ab6b2c
uri: /gcmd_keyword/f5717312-c3ca-4492-a166-9f17c6d9b273