Description

Trisodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphonatophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate known for its distinct chromophoric properties. This compound is critical for manufacturers requiring precise color development and excellent batch-to-batch consistency in demanding applications. It is primarily utilized by producers of specialized dyes, pigments, and colorants for textiles, inks, and analytical reagents.

Application

• Primary Intermediate for Azo Dyes: Key building block for synthesizing complex, high-performance azo dyes, particularly for textile fibers like cotton and nylon.
• Specialty Ink Formulations: Used in the production of colorants for inks in packaging, security printing, and digital applications.
• Analytical Chemistry Reagent: Serves as a chromogenic agent or indicator in specific spectrophotometric and complexometric analytical methods.
• Research & Development: Employed in chemical research for developing new colorants, studying azo coupling reactions, and material science applications.
• Industrial Pigment Precursor: Used in the manufacture of pigments for plastics, coatings, and other colored industrial materials.

Basic Information

Product Name	Trisodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphonatophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	5850-37-3
Molecular Formula	C28H16N6Na3O13S3
Molecular Weight	818.59 g/mol
Synonyms	Acid Black 210; C.I. 300310; Trisodium 4-amino-5-hydroxy-6-[(4-sulfophenyl)azo]-3-[(4-nitrophenyl)azo]-2,7-naphthalenedisulfonate; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-[(4-sulfophenyl)azo]-3-[(4-nitrophenyl)azo]-, trisodium salt; Benzenesulfonic acid, 4-[[4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-sulfo-2-naphthalenyl]azo]-, sodium salt (1:3); Azo Black 210; Trisodium 4-Amino-5-Hydroxy-3-(p-nitrophenylazo)-6-(p-sulfophenylazo)naphthalene-2,7-disulfonate
EINECS	Contact for details

Quality Control

Our Trisodium 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphonatophenyl)Azo]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system to ensure high purity and consistent performance. Every batch is tested against rigorous in-house specifications, which typically include identity confirmation, assay (purity), and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance with your technical 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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which may affect quality.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Freely soluble

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