Murexide, known scientifically as ammonium purpurate and identified by its CAS number 3051-09-0, is a chemical compound that plays a crucial role in analytical chemistry. Its distinctive red-purple crystal powder appearance and its precise colorimetric behavior make it an invaluable tool. Beyond its established laboratory uses, understanding its chemical properties can shed light on its potential in broader industrial applications. For those looking to buy Murexide indicator powder, a detailed understanding of its chemistry is key.

Chemical Structure and Properties

Murexide is a derivative of uric acid. Its molecular formula is C8H8N6O6, with a molecular weight of approximately 284.19 g/mol. The compound is a salt of purpuric acid, which itself is formed from the oxidation of barbituric acid. The key to Murexide's function as an indicator lies in the resonance structures of its purpurate anion, which allow for rapid protonation and deprotonation, leading to distinct color shifts.

Key properties include:

  • Appearance: Red purple crystal powder.
  • Purity: Typically supplied at 99% for analytical applications. This high purity is essential for reproducible results.
  • Solubility: Murexide is soluble in water, forming solutions that are sensitive to pH and metal ion concentrations.
  • Absorption Maximum: Its absorption maximum in water is typically observed between 519 to 522 nm, contributing to its characteristic color.
  • Reactivity: It readily forms colored complexes with various metal ions, such as calcium, magnesium, and nickel, making it a versatile complexometric and metal indicator.

Murexide in Analytical Applications

The high purity and specific reactivity of Murexide make it ideal for quantitative chemical analysis. Its primary use is in complexometric titrations, where it serves as an indicator to signal the endpoint when a chelating agent (like EDTA) has completely complexed with a metal ion. The transition from violet (in the presence of calcium ions) to blue signifies the completion of the reaction. This precision is vital for quality control and research, making it a frequently purchased reagent.

Industrial Potential Beyond Titration

The chemical characteristics of Murexide suggest broader industrial applications. Its ability to interact with various species and its stability under certain conditions lend it to roles such as an oil drilling auxiliary agent or in water treatment formulations. While these applications may not demand the same level of indicator precision, the underlying chemical behavior remains critical. For companies considering Murexide price for industrial volumes, understanding these functional properties is important.

Sourcing High-Quality Murexide

When seeking to purchase Murexide, especially for critical applications, selecting a reputable CAS 3051-09-0 supplier in China is paramount. NINGBO INNO PHARMCHEM CO.,LTD. focuses on delivering Murexide that meets stringent purity standards, ensuring reliable performance for both analytical and industrial uses. We understand the importance of detailed chemical specifications and provide the necessary documentation for our products.

Conclusion

Murexide is more than just an indicator; it is a compound with well-defined chemical properties that enable precise analysis and offer potential for diverse industrial roles. By understanding its structure, reactivity, and the importance of purity, buyers can make informed decisions when sourcing this valuable chemical. For all your Murexide requirements, trust in suppliers who prioritize quality and chemical integrity.