It is a salt used in swimming pools to maintain the pH within the range of 7.2–7.6. If the pH is not kept within this range, chemical consumption increases and issues such as water cloudiness may occur.

It is a water-soluble salt used in swimming pools to help maintain the pH within the range of 7.2–7.6. The dosage varies depending on water hardness: 1,500 grams per 100 m³ of water in soft water, and 500 grams per 100 m³ of water in hard water.