Ammonium persulfate

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ImageFile = Ammonium_persulfate.svg
OtherNames = Ammonium Peroxydisulfate
Section1 = Chembox Identifiers
SMILES =
CASNo = 7727-54-0
Section2 = Chembox Properties
Formula = (NH₄)₂S₂O₈
MolarMass = 228.18 g/mol
Appearance = white crystals
Density =
Solubility = 80 g/100 ml (25 °C)
MeltingPt = 120 °C (393 K) (decomposes)
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pKa =
pKb =
Viscosity =
Section3 = Chembox Structure
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Section7 = Chembox Hazards
ExternalMSDS = [http://www.jtbaker.com/msds/englishhtml/a6096.htm |External MSDS]
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Section8 = Chembox Related
OtherAnions =
OtherCations = Sodium persulfate
Potassium persulfate
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Ammonium persulfate (NH₄)₂S₂O₈ is a strong oxidizing agent. It is very soluble in cold water, a large fall of temperature accompanying solution. It is a very strong oxidizing agent and a radical initiator. It is used to etch copper on printed circuit boards as an alternative to ferric chloride solution. [cite web | url = http://www.mgchemicals.com/products/410.html | publisher = MG Chemicals | title = Ammonium Persulphate: Copper Etchant] It is also used along with tetramethylethylenediamine to catalyze the polymerization of acrylamide in making a polyacrylamide gel.

Ammonium persulfate was prepared by H. Marshall by the method used for the preparation of potassium persulfate — by the electrolysis of a solution of ammonium sulfate and sulfuric acid. [cite journal | title = LXXIV. Contributions from the Chemical Laboratory of the University of Edinburgh. No. V. The persulphates | author = Hugh Marshall | journal = J. Chem. Soc., Trans. | year = 1891 | volume = 59 | pages = 771 | doi = 10.1039/CT8915900771]

Ammonium persulfate is the main component of Nochromix. On dissolving in sulfuric acid, it is used to clean laboratory glassware as a metal-free alternative to chromic acid baths. [cite web | publisher = Sigma-Aldrich | url = http://www.sigmaaldrich.com/catalog/search/SpecificationSheetPage/ALDRICH/328693 | title = Nochromix | accessdate = 2008-03-01]

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