Ammonium Persulfate

Ammonium persulfate, also known as ammonium bisulfate, is an inorganic salt with the formula (NH4)2S2O8. It is a white or colorless crystalline solid.

Ammonium persulfate is a strong oxidizing agent and is used as a catalyst in polymer chemistry, as an etching agent, and as a cleaning and bleaching agent. It is also used in the production of bleach and hydrogen peroxide.

Physical and chemical properties of ammonium persulfate

• Chemical formula: (NH4)2S2O8
• Molar mass: 228.2 g/mol
• Melting point: 120 °C
• Boiling point: Decomposes before boiling
• Solubility: Soluble in cold water
• Density: 1.98 g/cm³

Uses of ammonium persulfate

• Catalyst in polymer chemistry: Ammonium persulfate is used as a catalyst in radical polymerization. It is used to produce a variety of polymers, including polystyrene, polyacrylonitrile, and synthetic rubber.
• Etching agent: Ammonium persulfate is used as an etching agent for metals, including copper, zinc, and aluminum. It is also used to etch printed circuit boards.
• Cleaning and bleaching agent: Ammonium persulfate is used as a cleaning and bleaching agent for textiles, paper, and other surfaces. It is also used to clean metals and to remove stains.
• Production of bleach and hydrogen peroxide: Ammonium persulfate is used to produce bleach and hydrogen peroxide. Bleach is a disinfectant and a bleaching agent, while hydrogen peroxide is a disinfectant and an antiseptic.

Safety of ammonium persulfate

Ammonium persulfate is a strong oxidizing agent and can irritate the skin, eyes, and respiratory tract. It can also be toxic if ingested. It is important to handle ammonium persulfate with care and to wear protective gloves, safety glasses, and a respirator.