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Ammonium persulfate






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This is an old revision of this page, as edited by Physicistjedi (talk | contribs)at17:05, 3 August 2009 (western blot). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
(diff)  Previous revision | Latest revision (diff) | Newer revision  (diff)

Ammonium persulfate
Names
Other names

Ammonium peroxydisulfate

Identifiers

CAS Number

ECHA InfoCard 100.028.897 Edit this at Wikidata
EC Number
  • 231-786-5
E number E923 (glazing agents, ...)
RTECS number
  • SE0350000
UN number 1444

CompTox Dashboard (EPA)

Properties

Chemical formula

(NH4)2S2O8
Molar mass 228.18 g/mol
Appearance white to yellowish crystals
Density 1.98 g/cm3
Melting point 120 °C (393 K) decomp.

Solubility in water

80 g/100 ml (25 °C)
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
2
1
0
Lethal dose or concentration (LD, LC):

LD50 (median dose)

689 mg/kg, oral (rat)
Related compounds

Other anions

Ammonium thiosulfate
Ammonium sulfite
Ammonium sulfate

Other cations

Sodium persulfate
Potassium persulfate

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

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 radical initiator. It is used to etch copper on printed circuit boards as an alternative to ferric chloride solution.[1] 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.[2]

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.[3] It is also a standard ingredient in western blot gels.

References

  1. ^ "Ammonium Persulphate: Copper Etchant". MG Chemicals.
  • ^ Hugh Marshall (1891). "LXXIV. Contributions from the Chemical Laboratory of the University of Edinburgh. No. V. The persulphates". J. Chem. Soc., Trans. 59: 771. doi:10.1039/CT8915900771.
  • ^ "Nochromix". Sigma-Aldrich. Retrieved 2008-03-01.
  • External links


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    This page was last edited on 3 August 2009, at 17:05 (UTC).

    This version of the page has been revised. Besides normal editing, the reason for revision may have been that this version contains factual inaccuracies, vandalism, or material not compatible with the Creative Commons Attribution-ShareAlike License.



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