A bleaching agent is a material that can be used for removing color or stains from surfaces. The most common bleaching agent is chlorine, which is used to bleach clothes, paper, and other materials. However, there are several other bleaching agents that can be used in different applications and industries. Oxygen-based bleaching agents are commonly used in laundry detergents and cleaning products, while hydrogen peroxide and sodium percarbonate are often used as household bleaching agents. Other types of bleaching agents include sodium hypochlorite, potassium permanganate, and sodium bisulfite. These agents can be used in applications like the food industry, wastewater treatment, and wood pulp bleaching.