'''Sulfur dioxide''' (SO<sub>2</sub>) is a [[toxic]] and colorless [[gas]] that is [[solubility|soluble]] in [[water]], [[alcohol]], and [[ether]]. It is used as a food preservative and as a chemical intermediate in [[paper]] pulping and ore refining. | '''Sulfur dioxide''' (SO<sub>2</sub>) is a [[toxic]] and colorless [[gas]] that is [[solubility|soluble]] in [[water]], [[alcohol]], and [[ether]]. It is used as a food preservative and as a chemical intermediate in [[paper]] pulping and ore refining. |