Description

4,5-Dihydroxy-3-[(Thiazol-2-Yl)Azo]-2,7-Naphthalenedisulfonic Acid is a specialized azo dye intermediate characterized by its sulfonic acid groups and heterocyclic thiazole component. This compound matters for its role as a key precursor in synthesizing high-performance, water-soluble dyes and pigments, offering excellent color fastness and complexing properties. It is primarily needed by manufacturers in the textile, leather, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textiles and leather.
• Used in the production of metal complex dyes, where it acts as a ligand due to its hydroxyl and azo groups.
• Key component in manufacturing reactive dyes for cotton and other cellulose fibers.
• Employed in the formulation of inks for digital and industrial printing applications.
• Potential use as a chromogenic agent in analytical chemistry and diagnostic kits.
• Research and development of novel functional dyes for optical and electronic applications.

Basic Information

Product Name	4,5-Dihydroxy-3-[(Thiazol-2-Yl)Azo]-2,7-Naphthalenedisulfonic Acid
CAS No.	28467-51-8
Molecular Formula	C₁₃H₉N₃O₈S₃
Molecular Weight	447.42 g/mol
Synonyms	2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(2-thiazolyl)azo]-; 3-[(2-Thiazolyl)azo]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid; C.I. Mordant Black 9; Acid Chrome Dark Blue; Thiazolyl Azo Naphthalenedisulfonic Acid Derivative; Azo dye intermediate 28467-51-8; 4,5-Dihydroxy-3-(2-thiazolylazo)-2,7-naphthalenedisulfonic acid
EINECS	Contact for details

Quality Control

Our production of 4,5-Dihydroxy-3-[(Thiazol-2-Yl)Azo]-2,7-Naphthalenedisulfonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for industrial synthesis. The material is characterized using advanced analytical techniques including HPLC, IR, and elemental analysis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

Storage

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

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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