Potassium persulfate is the inorganic compound with the formula K2S2O8. Also known as potassium peroxydisulfate or KPS, it is a white solid that is highly soluble in water. This salt is a powerful oxidant, commonly used to initiate polymerizations.
P 2429 (OTTO) Potassium persulphate, 99.99% trace metals basis Cas 7727-21-1 - used to initiate the polymerization of styrene to form monodispersed, surfactant-free polystyrene spheres.