In the realm of analytical chemistry, precise and reliable methods for determining the concentration of specific ions are fundamental. For the quantitative analysis of iron, one of the most effective tools is the use of REDOX indicators. Among these, 5-Nitro-1,10-phenanthroline (CAS: 4199-88-6) stands out due to its ability to form a distinctively colored complex with iron ions, making it a preferred choice for many laboratory procedures.

The Role of 5-Nitro-1,10-phenanthroline in Iron Determination

5-Nitro-1,10-phenanthroline, when complexed with iron(II) ions, forms a deep red complex known as nitro-ferroin. This complex exhibits a distinct color change during REDOX titrations, signaling the endpoint of the reaction. The process typically involves titrating a sample containing iron with a standard oxidizing agent (like potassium permanganate or potassium dichromate) or reducing agent, depending on the iron's oxidation state.

The key advantages of using 5-Nitro-1,10-phenanthroline as an indicator include:

  • Sharp Endpoint: The intense color of the iron complex provides a very sharp and easily discernible color change at the titration endpoint, enhancing accuracy.
  • Stability of the Complex: The iron(II) complex is relatively stable, ensuring reliable performance across a range of titration conditions.
  • Suitable for Various Matrixes: It can be effectively employed in the analysis of iron in various samples, from industrial materials to environmental water samples.

When procurement managers and lab scientists look to buy this critical reagent, ensuring its purity is paramount. Impurities could interfere with complex formation or lead to erroneous results, compromising the integrity of the analytical data. Sourcing from reputable manufacturers known for their quality control processes is therefore essential.

Procurement Considerations for Analytical Laboratories

For laboratories and research institutions, the decision to buy 5-Nitro-1,10-phenanthroline involves several considerations:

  • Purity: Analytical-grade reagents are required for accurate titrations. Look for products with stated purities of 97% or higher, and always request a Certificate of Analysis (CoA) to confirm quality.
  • Supplier Reliability: Choosing a supplier with a proven track record in providing high-quality analytical reagents ensures consistency and availability. Manufacturers in China are often excellent sources for these chemicals, offering competitive pricing.
  • Packaging and Shelf Life: Appropriate packaging preserves the chemical's integrity, and understanding its shelf life is important for inventory management.
  • Cost-Effectiveness: While purity is paramount, obtaining these reagents at a reasonable price is also important, especially for high-volume laboratories. Bulk purchase options from manufacturers can provide significant savings.

Beyond Iron Analysis

While its role in iron determination is prominent, 5-Nitro-1,10-phenanthroline also has broader applications as an organic intermediate in chemical synthesis, contributing to the development of new materials and derivatives. Its chelating properties make it interesting for coordination chemistry research as well.

Conclusion

5-Nitro-1,10-phenanthroline is an indispensable tool for analytical chemists performing REDOX titrations, particularly for iron determination. Its sharp endpoint and stable complex formation make it a reliable indicator. For procurement professionals seeking to buy this essential reagent, prioritizing purity and supplier reliability is key. We provide access to high-quality 5-Nitro-1,10-phenanthroline from leading manufacturers, ensuring accuracy and efficiency in your laboratory operations. Contact us for competitive pricing and reliable supply.