Sodium Hydroxide (NaOH)

Sodium hydroxide (NaOH, also known as caustic soda) is a white, hygroscopic solid. When it is exposed to the air, it reacts with the carbon dioxide in the air to form sodium carbonate. Sodium hydroxide is mainly used as caustic soda and is one of the most important industrial chemicals of our time. Solid sodium hydroxide is an essential component of drain cleaners.