What Is the Chemical Formula for Chlorine Gas?

What Is the Chemical Formula for Chlorine Gas?

The chemical formula for chlorine gas is Cl2. Its molar mass is 70.906 grams per mole. It exists as a yellow-green gas at standard temperature and pressure, and its density is 3.2 grams per liter. Its melting point is -150.7 degrees Fahrenheit, and its boiling point is -29.27 degrees Fahrenheit.

Chlorine gas has an odor similar to common household bleach. It can be dissolved in water; however, it also partially reacts with water to form hydrochloric acid and hypochlorous acid. Chlorine is classified as a halogen, and its negative ion forms salts in combination with positive metal ions. Its best known compound is sodium chloride, which has been used as table salt since ancient times.