Sulfur dioxide is a chemical compound with the formula SO2. Sulfur dioxide gas is colorless, has an irritating and pungent odor, and is very toxic. As a result, SO2 poses a significant threat in certain workplaces. Prolonged exposure can lead to breathing difficulties, as well as damage to the respiratory tract and can cause . Additionally, sulfur dioxide is very reactive, and often combines with other compounds in the atmosphere. These compounds can increase acid rain and/or haze, both of which present danger.
Type: Electrochemical
Range: 0-100ppm (0.1ppm resolution)
Low Alarm: 2 ppm
High Alarm: 5 ppm
STEL — 15 minute — Short Term Exposure Limit: 10 ppm
TWA — 8 hour time weighted average: 2 ppm
https://www.epa.gov/so2-pollution/sulfur-dioxide-basics
https://www.cdc.gov/niosh/docs/81-123/pdfs/0575.pdf
https://www.nps.gov/subjects/air/humanhealth-sulfur.htm
https://www.ncbi.nlm.nih.gov/books/NBK219999/
https://www.cdc.gov/niosh/idlh/7446095.html
https://www.osha.gov/chemicaldata/549
https://www.ccohs.ca/oshanswers/chemicals/chem_profiles/sulfurdi.html
https://pubchem.ncbi.nlm.nih.gov/compound/Sulfur-dioxide#section=Preventive-Measures