Description

3-[(4-Chloro-2-Phosphonophenyl)Azo]-4,5-Dihydroxy-6-[(4-Nitrophenyl)Azo]-2,7-Naphthalenedisulfonic Acid is a high-purity, complex azo dye intermediate with a distinctive bifunctional structure. This compound matters for its role as a critical precursor in synthesizing specialized dyes and pigments, offering unique color properties and chelating capabilities. It is primarily needed by manufacturers in the fine chemicals, specialty dyes, and advanced materials sectors for research and production.

Application

• Specialty Dye & Pigment Synthesis: A key intermediate for producing high-performance azo dyes with specific shades and light-fastness properties.
• Metal Complex Dye Production: Utilized in the manufacture of dyes that form stable complexes with metal ions for textile and industrial coloring.
• Analytical Chemistry Reagent: Serves as a chromogenic agent or complexometric indicator in specific analytical methodologies.
• Research & Development: Used in chemical R&D for exploring new functional dyes, sensors, or advanced organic materials.
• Functional Material Precursor: Potential applications in creating materials for optics or as a ligand in coordination chemistry.

Basic Information

Product Name	3-[(4-Chloro-2-Phosphonophenyl)Azo]-4,5-Dihydroxy-6-[(4-Nitrophenyl)Azo]-2,7-Naphthalenedisulfonic Acid
CAS No.	81138-76-3
Molecular Formula	C22H14ClN5O12PS2
Molecular Weight	663.92 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2,7-Naphthalenedisulfonic acid, 3-[(4-chloro-2-phosphonophenyl)azo]-4,5-dihydroxy-6-[(4-nitrophenyl)azo]-; 3-[(4-Chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxy-6-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonic acid; Phosphonated Azo Dye Intermediate; Bisazo naphthalene dye
EINECS	Contact for details

Quality Control

Our 3-[(4-Chloro-2-Phosphonophenyl)Azo]-4,5-Dihydroxy-6-[(4-Nitrophenyl)Azo]-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 with every shipment to guarantee it meets your research or production requirements.

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 incompatible materials. Due to its light-sensitive nature, containers should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions

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