Peroxosulfates

Peroxosulfates are a group of chemical compounds containing the peroxosulfate anion, S2O8 2−. This anion is characterized by a peroxide bond (-O-O-) bridging two sulfate groups. The most common peroxosulfates are potassium peroxodisulfate (K2S2O8), ammonium peroxodisulfate ((NH4)2S2O8), and sodium peroxodisulfate (Na2S2O8). These compounds are powerful oxidizing agents and are often produced by the electrolysis of sulfate or bisulfate solutions.

Peroxosulfates find widespread industrial applications. They are frequently used as initiators in free-radical polymerization processes for the production of plastics and synthetic fibers, such as polyethylene, polyvinyl chloride, and acrylics. Their oxidizing properties also make them useful in cleaning products, particularly for laundry detergents and dishwasher detergents, where they help to remove stains and disinfect surfaces. In the electronics industry, they are employed in etching processes for printed circuit boards. Additionally, peroxosulfates have applications in water treatment and as bleaching agents. Their reactivity necessitates careful handling and storage due to their potential to cause fires or explosions when in contact with combustible materials.