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| IUPAC names
Diazanium sulfonatooxy sulfate
| Other names
|Molar mass||228.18 g/mol|
|Appearance||White crystalline solid|
|Melting point||120 °C (248 °F; 393 K) (decomposes)|
|80 g/100 mL (at 25 °C)|
|Solubility||Moderately soluble in methanol|
|Safety data sheet||ScienceLab|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
|689 mg/kg, oral (rat)|
| Potassium persulfate|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ammonium persulfate (or APS) is a colorless inorganic compound with the formula (NH4)2S2O8, widely used as an etchant.
Ammonium persulfate is used as radical initiator in polymerization, one example being the production of styrene-butadiene rubber.
When heated to 120°C, ammonium persulfate decomposes releasing sulfur oxides, nitrogen oxides, oxygen and ammonia.
Ammonium persulfate is a white solid, soluble in water.
Ammonium persulfate is sold by various electronics stores. It can also be purchased from eBay.
- PCB etching
- Making the low explosive Tetraaminecopper(II) persulphate
Ammonium persulfate is a strong oxidizer and should be handled with proper protection. Inhalation is suspected to cause asthmatic effects, especially in women.
Ammonium peroxydisulfate is sensitive to moisture and will eventually decompose in a wet environment, releasing hydrogen peroxide.
Amonium peroxydisulfate should be stored in closed bottles or bags, away from moisture, acidic vapors or organic materials, preferably in a dark and dry environment. Ammonium persulfate does not store very well, and will become a wet mass, with little oxidizing potential after at least two years of storage.
Heating the salt will cause it to decompose.