Description

Sodium 3-[(8-Hydroxyquinolin-7-Yl)Azo]Benzenesulphonate is a high-purity azo dye intermediate and analytical reagent known for its specific chelating and chromogenic properties. This compound is valued for its ability to form stable, colored complexes with various metal ions, making it a critical component in precise detection and quantification processes. It is primarily required by manufacturers and research laboratories in the analytical chemistry, metallurgy, and specialty chemical synthesis sectors.

Application

• Analytical Reagent: Used as a selective colorimetric reagent for the detection and spectrophotometric determination of metal ions such as aluminum, magnesium, and zinc.
• Chelating Agent: Functions as a ligand in the preparation of metal complexes for catalytic or material science applications.
• Dye Intermediate: Serves as a key precursor in the synthesis of specialized azo dyes and pigments for niche industrial applications.
• Biochemical Research: Employed in laboratory studies for staining or as a probe in metalloprotein analysis due to its metal-binding affinity.
• Water Treatment Analysis: Applied in methods for trace metal analysis in environmental water samples.
• Photographic Chemicals: Can be utilized in the formulation of certain light-sensitive photographic chemicals.

Basic Information

Item	Detail
Product Name	Sodium 3-[(8-Hydroxyquinolin-7-Yl)Azo]Benzenesulphonate
CAS No.	94109-25-8
Molecular Formula	C15H9N3NaO4S
Molecular Weight	350.30 g/mol
Synonyms	7-(4-Sulfophenylazo)-8-hydroxyquinoline-5-sulfonic acid sodium salt; 8-Hydroxy-7-[(4-sulfophenyl)azo]quinoline-5-sulfonic acid sodium salt; Sodium 8-hydroxy-7-[(4-sulfophenyl)azo]quinoline-5-sulfonate; Azo dye intermediate for metals; SPADNS analogue; HQAS; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Sodium 3-[(8-Hydroxyquinolin-7-Yl)Azo]Benzenesulphonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and UV-Vis spectroscopy, to ensure it meets precise compositional standards. Certificates of Analysis (COA) detailing all test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from incompatible materials. The product is light-sensitive and should be stored away from light as indicated.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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