Sulfur dioxide is a chemical substance. The molecular formula for sulfur dioxide is SO2. There are three atoms, including one atom of sulfur and two atoms of oxygen, present in one molecule of sulfur dioxide. The molar mass of sulfur dioxide is 64.07 grams per mole. Its normal phase is gas. It is a colorless gas. The density of sulfur dioxide is 2.551 grams per liter in gas phase and 1.46 grams per centimeter cube in liquid phase at -10 degrees Celsius. The melting and boiling points of sulfur dioxide are 198 kelvin and 263 kelvin respectively. Moreover, it is soluble in water and its solubility varies with change in temperature.
