Ammonium iron(III) sulfate dodecahydrate (CAS 7783-83-7)

Ammonium iron(III) sulfate dodecahydrate, with the chemical formula (NH4)Fe(SO4)2·12H2O, commonly known as ferric ammonium sulfate, is a crystalline compound typically found in the form of pale violet or purple octahedral crystals. This inorganic compound combines the properties of iron(III) sulfate and ammonium sulfate, offering unique chemical stability and solubility that are utilized primarily in analytical chemistry. As a robust oxidizing agent, it is central in redox titrations, where it facilitates the transfer of electrons in oxidation-reduction reactions. This characteristic makes it an essential standard for determining the concentration of reducing substances in solution through titration methods. In research contexts, ammonium iron(III) sulfate dodecahydrate is instrumental for studying the kinetics and mechanisms of redox reactions, providing insights into reaction dynamics and catalysis under controlled experimental conditions. It also serves as a precursor in synthesizing iron-based compounds and can be used in environmental chemistry for the remediation and analysis of pollutants, particularly in water treatment processes where its ability to form precipitates aids in the removal of contaminants. The compound′s role in these applications not only underscores its chemical utility but also highlights its importance in advancing experimental and environmental methodologies.