Ammonium peroxydisulfate ((NH4)2S2O8)-Crystalline

Characteristic




Ammonium persulfate (APS) is the inorganic compound with the formula (NH4)2S2O8. It is a colourless (white) salt that is highly soluble in water, much more so than the related potassium salt. It is a strong oxidizing agent that is used in polymer chemistry, as an etchant, and as a cleaning and bleaching agent.




Chemical formula:(NH4)2S2O8

Molar mass:228.18 g/mol

Appearance:white to yellowish crystals

Density:1.98 g/cm3

Melting point:120 °C (248 °F; 393 K) decomposes

Solubility in water:80 g/100 mL (25 °C)

Solubility:Moderately soluble in MeOH




Application




Ammonium peroxydisulfate is widely utilized as an oxidizing agent and radical initiators in the polymerization of certain alkenes. It is actively involved in in the synthesis of commercially important polymers like styrene-butadiene rubber and polytetrafluoroethylene. It combines with tetramethylethylenediamine to catalyze the polymerization of acrylamide. Due to its oxidizing properties, it can be employed to etch copper on printed circuit boards which is an alternative to ferric chloride solution. Also, it acts as oxidants in organic synthesis.