What chemical is NOT commonly used as an oxidizing agent?

Calcium chloride is not commonly recognized as an oxidizing agent. Instead, it primarily functions as a salt, often used for de-icing roads and as a desiccant due to its hygroscopic properties. Unlike oxidizing agents, which donate oxygen or accept electrons during chemical reactions to facilitate the oxidation of other substances, calcium chloride lacks the necessary chemical reactivity to be classified as such.

On the other hand, ozone, potassium permanganate, and chlorine are well-known oxidizers. Ozone is utilized in water treatment processes for both disinfection and oxidation of pollutants. Potassium permanganate is a strong oxidizing agent frequently applied in water treatment and wastewater processes to remove organic matter and control odor. Chlorine, widely used for disinfection, also works as an oxidizing agent to kill bacteria and other harmful microorganisms. Their strong electron-accepting capabilities make them effective in various chemical and environmental applications, distinguishing them from calcium chloride.