Overview
Ferroin is a coordination complex of iron(II) with 1,10-phenanthroline, commonly used as a redox indicator in analytical chemistry. It is known for its sharp color change from red to pale blue when oxidized, making it highly effective in titration experiments. The compound is widely utilized due to its stability and sensitivity in detecting the endpoint of redox reactions. Its ability to form a stable complex with iron(II) ions allows for precise measurements in various chemical analyses.
Physical and Chemical Properties
Ferroin appears as a dark red to brown crystalline powder and is soluble in both water and ethanol. Its molecular formula is C36H24FeN6, with a molecular weight of 596.52 g/mol. The compound forms a stable complex with iron(II) ions, which is crucial for its function as a redox indicator. The key property of Ferroin is its reversible redox behavior, transitioning between a red reduced form and a pale blue oxidized form. This characteristic makes it indispensable in applications requiring precise detection of oxidation-reduction reactions.
Main Applications
Ferroin is primarily used in redox titrations, where it serves as a visual indicator for the endpoint of the reaction. Its sharp color change ensures accurate and reliable results in analytical chemistry. Beyond titrations, Ferroin is employed in colorimetric assays and as a reagent in environmental testing. Its stability and sensitivity make it a preferred choice for laboratories and industrial applications requiring precise redox measurements.
Safety and Storage
Ferroin should be handled with care to avoid inhalation or contact with skin and eyes. It is recommended to use personal protective equipment (PPE) such as gloves and goggles when working with this compound. For storage, Ferroin should be kept in a cool, dry place away from light and moisture. Proper storage conditions help maintain its stability and effectiveness over time. Always refer to the material safety data sheet (MSDS) for detailed safety guidelines.
B2B Procurement Guide
When purchasing Ferroin for industrial or laboratory use, it is essential to verify the purity and quality of the product. Suppliers should provide a certificate of analysis (CoA) to confirm the compound's specifications. Consider the intended application when selecting the appropriate grade of Ferroin. Prices may vary based on purity and supplier, with reference prices ranging from approximately $50 to $200 per 100g. Bulk purchases may offer cost savings for large-scale operations.
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