Description

8-Hydroxyquinoline-5-Sulfonic Acid is a versatile sulfonated derivative of 8-hydroxyquinoline, a well-known chelating agent. This compound is valued for its enhanced water solubility and strong metal-chelating properties, making it a critical intermediate and functional additive in advanced chemical synthesis. It is primarily sought by manufacturers in the pharmaceutical, analytical chemistry, and specialty chemical sectors for applications ranging from catalyst synthesis to analytical reagent formulation.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents that require metal chelation.
• Analytical Chemistry Reagent: Serves as a sensitive colorimetric and fluorometric reagent for the detection and quantification of metal ions (e.g., aluminum, magnesium) in various matrices.
• Catalyst Ligand: Acts as a ligand in homogeneous catalysis for organic transformations, leveraging its ability to coordinate with transition metals.
• Corrosion Inhibitor: Employed in formulations to protect metals by forming stable chelate complexes on surfaces.
• Polymer Additive: Incorporated into polymers to impart UV-stabilizing or metal-deactivating properties.
• Water Treatment Chemical: Used in sequestering and removing heavy metal ions from industrial wastewater.
• Research & Development: A key building block in academic and industrial R&D for developing new chelating agents and functional materials.

Basic Information

Item	Details
Product Name	8-Hydroxyquinoline-5-Sulfonic Acid
CAS No.	207386-92-3
Molecular Formula	C9H7NO4S
Molecular Weight	225.22 g/mol
Synonyms	8-Hydroxy-5-quinolinesulfonic Acid; 5-Sulfo-8-hydroxyquinoline; 8-Hydroxyquinoline-5-sulfonate; Oxine-5-sulfonic Acid; 8-Hydroxy-5-quinoline sulfonic acid; 5-Quinolinesulfonic acid, 8-hydroxy-; 8-HQ-5-SA
EINECS	Contact for details

Quality Control

Our 8-Hydroxyquinoline-5-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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