sulfur dioxide

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sulfur

 [sul´fer]
a chemical element, atomic number 16, atomic weight 32.064, symbol S. (See Appendix 6.)
sulfur dioxide a colorless, nonflammable gas used as an antioxidant in pharmaceutical preparations; it is also an important air pollutant, irritating the eyes and respiratory tract.
precipitated sulfur a topical scabicide, antiparasitic, antibacterial, antifungal, and keratolytic.
sublimed sulfur a topical scabicide and antiparasitic.

sul·fur di·ox·ide

a colorless, nonflammable gas with a strong, suffocating odor; a powerful reducing agent used to prevent oxidative deterioration of food and medicinal products.
See also: sulfurous acid.
Synonym(s): sulfurous oxide

sulfur di·ox·ide

(SO2) (sŭlfŭr dī-oksīd)
Colorless, nonflammable gas with a strong, suffocating odor; a powerful reducing agent used to prevent oxidative deterioration of food and medicinal products.