Description

4,5-Dihydroxy-3-(Phenylazo)-6-(8-Quinolinylazo)-2,7-Naphthalenedisulfonic Acid is a specialized azo dye intermediate with a complex, multi-functional structure. This compound matters for its unique chromophoric properties, derived from the synergistic combination of phenylazo and quinolinylazo groups on a naphthalenedisulfonic acid backbone. It is primarily needed by manufacturers in the dye and pigment industries for synthesizing high-performance colorants, as well as by research institutions developing advanced analytical reagents and sensors.

Application

• Precursor for High-Performance Dyes & Pigments: Serves as a critical intermediate in the synthesis of complex azo dyes for textiles, inks, and specialty coatings.
• Analytical Chemistry Reagent: Used in the development of colorimetric indicators and chelating agents for metal ion detection due to its multiple binding sites.
• Research & Development: Employed in academic and industrial R&D for studying azo compound chemistry, photophysical properties, and molecular recognition.
• Specialty Chemical Synthesis: Acts as a building block for creating functionalized molecules with specific optical or electronic characteristics.

Basic Information

Product Name	4,5-Dihydroxy-3-(Phenylazo)-6-(8-Quinolinylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	90895-52-6
Molecular Formula	C25H16N4O8S2
Molecular Weight	564.55 g/mol
Synonyms	4,5-Dihydroxy-3-(phenylazo)-6-(8-quinolinylazo)-2,7-naphthalenedisulfonic acid; 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(phenylazo)-6-(8-quinolinylazo)-; Azo dye intermediate 90895-52-6; Bis-azo naphthalene derivative; Quinolinylazo phenylazo naphthalenedisulfonic acid
EINECS	Contact for details

Quality Control

Our 4,5-Dihydroxy-3-(Phenylazo)-6-(8-Quinolinylazo)-2,7-Naphthalenedisulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (HPLC), impurity profile, and physical characteristics is provided and available upon request to support your quality assurance protocols.

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). Keep away from strong oxidizing agents. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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