Sulfur dioxide

From GAWDAwiki

Sulfur dioxide (SO₂) is the starting material in the production of sulfuric acid (H₂SO₄).

Applications

Sulfur dioxide is used as a fumigant, preservative, bleach, and steeping agent for grain. Small amounts of sulfur dioxide may be used as a preservative in the vineyard and during winemaking to protect grapes and wine from microbial attack or further oxidation.

Sulfur dioxide is used in calibration gas mixtures for the petrochemical industry in environmental emission monitoring, industrial hygiene monitors and trace impurity analyzers.

Sulfur dioxide is a bleaching agent in the pulp and paper industry, and also a flotation depressant for sulfide ores in the mining industry.^[1]