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Ammonium iron(II) sulfate hexahydrate, Mohr’s salt, reagent, 99.0+%, 100g, US $76 – Picture 0
Ammonium iron(II) sulfate hexahydrate, Mohr’s salt, reagent, 99.0+%, 100g, US $76 – Picture 0

Ammonium Iron(ii) Sulfate Hexahydrate, Mohr’s Salt, Reagent, 99.0+%, 100g

US $76

  • Tallinn, Estonia
  • Jun 7th
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Ammonium iron(II) sulfate hexahydrate, Mohr’s salt, reagent, 99.0+%, 100g CAS Number: 7783-85-9 Linear Formula: (NH4)2Fe(SO4)2·6H2O Molecular Weight: 392.14   Ammonium iron(II) sulfate, or Mohr's Salt, is the inorganic compound with the formula (NH4)2Fe(SO4)2·6H2O. Containing two different cations, Fe2+ and NH4+, it is classified as a double salt of ferrous sulfate and ammonium sulfate. It is a common laboratory reagent. Like the other ferrous sulfate salts, ferrous ammonium sulfate dissolves in water to give the aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry.  In analytical chemistry, this salt is preferred over other salts of ferrous sulfate for titration purposes as it is much less prone to oxidation by air to iron(III). The oxidation of solutions of iron(II) is very pH dependent, occurring much more readily at high pH. The ammonium ions make solutions of Mohr's salt slightly acidic, which slows this oxidation process. Sulfuric acid is commonly added to solutions to reduce oxidation to ferric iron. Mohr's salt is named after the German chemist Karl Friedrich Mohr, who made many important advances in the methodology of titration in the 19th century. It is used in the Fricke's dosemeter to measure high doses of gamma rays.  

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