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Ammonium peroxydisulfate; AMMONIUM PEROXYDISULFATE; AMMONİUM PEROXYDİSUÜLFATE; amonyum peroksidisülfat; amanyum persülfat; AMONYUM PERSULFAT; AMONYUM PERSÜLFAT; amonyum persulfate; amonyum persülfate; amonyum persülfat; APS; amonyum peroksidisülfat;  Amonyum persülfat; Ammonium peroxydisulfate.

Cas No:7727-54-0

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. The dissolution of the salt in water is an endothermic process. mmonium persulfate is prepared by electrolysis of a cold concentrated solution ammonium sulfate in sulfuric acid at a high current density. The method was first described. As an oxidizer and a source of radicals, APS finds many commercial applications. Salts of peroxydisulfate are mainly used as radical initiators in the polymerization of certain alkenes. Commercially important polymers prepared using persulfates include styrene-butadiene rubber and polytetrafluoroethylene. In solution, the dianion dissociates to give radicals. The sulfate radical adds to the alkene to give a sulfate ester radical. It is also used along with tetramethylethylenediamine to catalyze the polymerization of acrylamide in making a polyacrylamide gel. Illustrative of its powerful oxidizing properties, it is used to etch copper on printed circuit boards as an alternative to ferric chloride solution. Ammonium persulfate is a standard ingredient in western blot gels and hair bleach. Persulfates are used as oxidants in organic chemistry. Airborne dust may be irritating to eye, nose, throat, lung and skin upon contact. Exposure to high levels of dust may cause difficulty in breathing. It has been noted that persulfate salts are a major cause of asthmatic effects in women. Furthermore, it has been suggested that exposure to ammonium persulfate can cause asthmatic effects in hair dressers and receptionists working in the hair dressing industry. These asthmatic effects are proposed to be caused by the oxidation of cysteine residues, as well as methionine residues.

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