Complexometric titrations are a cornerstone of quantitative chemical analysis, particularly for determining the concentration of metal ions in a solution. The accuracy of these titrations relies heavily on the selection of an appropriate indicator that provides a sharp, clear color change at the equivalence point. 1-(2-Pyridylazo)-2-naphthol (CAS 85-85-8), often known as PAN, is a widely recognized and highly effective indicator for a multitude of metal titrations. For those looking to buy reliable titration indicators, understanding the benefits of PAN is essential.

PAN: An Exceptional Indicator for Metal Complexation

PAN's efficacy as a complexometric indicator stems from its ability to form colored complexes with metal ions. In a titration where a metal ion is being complexed by a titrant like EDTA, PAN acts as a secondary chelating agent. It forms a colored complex with the free metal ion. As the EDTA titrant is added, it sequentially displaces PAN from the metal ion. At the equivalence point, when all the metal ion has been complexed by EDTA, the indicator is released in its free form, resulting in a distinct color change. This sharp transition makes it easier to pinpoint the endpoint accurately. As a manufacturer based in China, we are proud to supply high-quality PAN (CAS 85-85-8) to laboratories globally.

Advantages of Using PAN in Titrations

PAN offers several advantages over other indicators:

  • Wide Applicability: It is effective for the titration of a broad range of metal ions, including many transition metals.
  • Sharp Color Changes: The formation and dissociation of its metal complexes typically result in distinct and easily observable color transitions.
  • Sensitivity: PAN is sensitive enough to detect small changes in metal ion concentration, contributing to precise titrations.
  • Stability: Under appropriate conditions, PAN is a stable reagent, ensuring consistent performance over time.

Purchasing 1-(2-Pyridylazo)-2-naphthol from a trusted manufacturer like ourselves ensures you receive a product that meets rigorous quality standards, vital for the reproducibility of your analytical results. We understand the needs of R&D scientists and procurement managers, offering competitive prices and reliable supply from our China facility. If you need to buy this critical indicator for your complexometric titrations, we are your go-to supplier.

Empower your analytical chemistry workflows with the superior performance of 1-(2-Pyridylazo)-2-naphthol. We invite you to contact us for a quotation or to request a sample. Experience the convenience and reliability of sourcing your essential laboratory reagents from a dedicated chemical supplier.