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sulfur dioxide (SO2)
A colorless, pungent, poisonous gas which dissolves in water to give a mixture of sulfuric and sulfurous acids. Sulfur dioxide is used in the contact process to manufacture sulfuric acid and as a refrigerant, bleaching agent, and preservative.
| Density (air = 1) | 2.2 |
| Melting point | -75.5 °C (-103.9 °F) |
| Boiling point | -10.0 °C (14.8 °F) |
Related category
• INORGANIC CHEMISTRY
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