Description

1-(2-Pyridylazo)-2-Naphthol-6-Sulfonic Acid is a high-purity analytical reagent and a versatile organic intermediate. This compound is valued for its strong chelating properties and its role as a chromogenic agent in sensitive spectrophotometric determinations. It is primarily needed by analytical laboratories, research institutions, and manufacturers in the chemical and pharmaceutical sectors for trace metal analysis and specialized synthesis.

Application

• Spectrophotometric Reagent: Used as a sensitive colorimetric indicator for the determination of trace metals such as cobalt, nickel, copper, and zinc in various matrices.
• Analytical Chemistry: Serves as a chelating agent in complexometric titrations and for the pre-concentration of metal ions prior to analysis.
• Research & Development: Employed in biochemical and environmental research for studying metal ion binding and transport mechanisms.
• Pharmaceutical Intermediates: Acts as a building block in the synthesis of more complex molecules for pharmaceutical applications.
• Water & Environmental Testing: Applied in kits and methods for detecting heavy metal contamination in water and soil samples.
• Dye & Pigment Synthesis: Utilized as a precursor in the manufacture of azo dyes and functional pigments.

Basic Information

Product Name	1-(2-Pyridylazo)-2-Naphthol-6-Sulfonic Acid
CAS No.	76790-04-0
Molecular Formula	C₁₅H₁₁N₃O₄S
Molecular Weight	329.33 g/mol
Synonyms	PAN-6S; 1-(2-Pyridylazo)-2-naphthol-6-sulfonic acid; 6-Sulfo-1-(2-pyridylazo)-2-naphthol; 2-Naphthol, 1-(2-pyridylazo)-6-sulfo-; 1-(Pyridin-2-yldiazenyl)naphthalen-2-ol-6-sulfonic acid; PAR-6S (related compound); Spectrophotometric grade PAN-6S; Metal indicator PAN-6S
EINECS	Contact for details

Quality Control

Our 1-(2-Pyridylazo)-2-Naphthol-6-Sulfonic Acid is manufactured under strict quality protocols to ensure consistency and reliability for analytical applications. Each batch is tested to meet high-purity reagent standards, with key parameters including identity, assay, and impurity profile verified. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility Test	Clear solution in dilute alkali

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.