Description

8-Hydroxyquinoline-5-Sulfonic Acid is a versatile sulfonated derivative of 8-hydroxyquinoline, valued for its chelating and analytical properties. This compound serves as a critical intermediate and reagent in various high-precision chemical synthesis and analysis processes. It is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors requiring reliable, high-purity chelating agents.

Application

• Analytical Chemistry Reagent: Used as a sensitive colorimetric and fluorometric reagent for the detection and quantification of metal ions such as aluminum, magnesium, and iron.
• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Synthesis: Employed in the production of certain fungicides and plant growth regulators due to its bioactive quinoline structure.
• Corrosion Inhibitor Formulation: Acts as a component in formulations designed to protect metals, particularly in cooling water systems.
• Dye and Pigment Manufacturing: Functions as an intermediate in the synthesis of certain complex dyes and organic pigments.
• Research & Development: Utilized in academic and industrial research for studying metal-ligand interactions and developing new catalytic systems.

Basic Information

Product Name	8-Hydroxyquinoline-5-Sulfonic Acid
CAS No.	84-88-8
Molecular Formula	C9H7NO4S
Molecular Weight	225.22 g/mol
Synonyms	8-Hydroxyquinoline-5-sulfonic acid; 5-Sulfo-8-hydroxyquinoline; 8-Hydroxy-5-quinolinesulfonic acid; Oxine-5-sulfonic acid; 8-Hydroxyquinoline sulfonic acid; 5-Sulfoxyquinolin-8-ol; Quinolin-8-ol-5-sulfonic acid; 8-Hydroxy-5-quinoline sulfonic acid
EINECS	201-574-7

Quality Control

Our 8-Hydroxyquinoline-5-Sulfonic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets stringent specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to guarantee traceability and consistency for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.