For professionals in chemistry and materials science, understanding the fundamental properties of chemical reagents is crucial for their effective application. 1-(2-Pyridylazo)-2-naphthol (CAS 85-85-8), commonly known as PAN, is a vital organic compound celebrated for its utility as a metal indicator and spectrophotometric reagent. This article explores the chemical characteristics of PAN and provides guidance for purchasing this essential substance from reliable sources.

Chemical Profile of PAN (CAS 85-85-8)

1-(2-Pyridylazo)-2-naphthol is an organic dye with the molecular formula C15H11N3O and a molecular weight of approximately 249.27 g/mol. Its structure features a naphthol group linked via an azo bridge to a pyridine ring. This unique arrangement allows PAN to act as a multidentate ligand, capable of forming stable chelate complexes with various metal ions. These complexes are typically intensely colored, exhibiting strong absorption in the visible spectrum, which is the basis for its use in both complexometric titrations and spectrophotometric analyses.

Key properties include:

  • Appearance: Typically an orange to reddish-brown powder.
  • Solubility: Insoluble in water, but soluble in organic solvents like ethanol and methanol.
  • Stability: Stable under normal storage conditions, but incompatible with strong oxidizing agents and strong bases. Storage recommendations usually involve keeping it at room temperature or refrigerated.
  • Chelation: Forms complexes with a wide range of metal ions, with color varying depending on the metal and pH.

As a chemical manufacturer, we ensure that our supply of PAN (CAS 85-85-8) adheres to strict quality control measures to maintain these properties.

Purchasing Guide for 1-(2-Pyridylazo)-2-naphthol

When you need to buy 1-(2-Pyridylazo)-2-naphthol for your laboratory or industrial applications, selecting a reputable supplier is critical. Here’s what to look for:

  • Purity: Ensure the product meets the required purity level (e.g., >97% or >98% HPLC) for your intended application, whether it's for precise titrations or sensitive spectrophotometry.
  • Supplier Reputation: Choose manufacturers with a proven history of quality and reliability. Working with suppliers from China, like ourselves, can offer cost-effectiveness without compromising on quality.
  • Documentation: Always request a Certificate of Analysis (CoA) with your purchase, which provides detailed information on the product's specifications and purity.
  • Technical Support: A good supplier will offer technical assistance regarding the product's properties, handling, and optimal use.

We pride ourselves on being a trusted supplier of high-purity 1-(2-Pyridylazo)-2-naphthol. Our commitment to excellence in manufacturing and customer service makes us an ideal partner for your chemical needs. If you are looking to buy PAN or any other analytical reagents, please contact us for a quotation or to learn more about our product offerings. We are dedicated to supporting your scientific and industrial endeavors.