What is the solid form of chlorine commonly referred to as?

The solid form of chlorine is commonly referred to as Calcium Hypochlorite. This compound is primarily used in water treatment applications due to its ability to effectively disinfect water. Calcium Hypochlorite is available in granules or tablets and contains a high concentration of chlorine, making it suitable for pool sanitation and drinking water treatment.

Calcium Hypochlorite is advantageous because it is stable and can be stored for longer periods compared to gaseous forms of chlorine. When dissolved in water, it releases chlorine, which acts as a powerful disinfectant, killing bacteria and other pathogens present in the water.

In contrast, Sodium Chloride is table salt and does not serve the same disinfection purpose as solid chlorine. Chlorine Dioxide is a different compound that is used for disinfection but is typically applied in its gaseous form, not as a solid. Hypochlorous Acid is formed when chlorine is dissolved in water and is a potent disinfectant but is not a solid form of chlorine. Therefore, Calcium Hypochlorite is the correct answer for the solid form of chlorine commonly used in water treatment.