Description

4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple azo and sulphonic acid groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid, stable colors with specific application properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance acid dyes and direct dyes for textiles like nylon, silk, and wool.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, including printing inks and colorants for packaging materials.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry and photostability.
• Analytical Reagent: Can be utilized as a staining agent or a complexometric indicator in specific analytical chemistry applications.
• Functional Material Synthesis: Potential use as a monomer or intermediate in the creation of dyes for functional materials, including sensors or light-absorbing layers.

Basic Information

Item	Detail
Product Name	4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	83249-38-1
Molecular Formula	C28H17N7O12S3Na3 (or related sodium salt form)
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(4-sulfophenyl)azo]naphthalene-2,7-disulfonic acid trisodium salt; Trisodium 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(4-sulfophenyl)azo]naphthalene-2,7-disulfonate; Azo dye intermediate 83249-38-1; 3-[(4-Nitrophenyl)azo]-4-amino-5-hydroxy-6-[(4-sulfophenyl)azo]naphthalene-2,7-disulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of 4-Amino-5-Hydroxy-3-[(4-Nitrophenyl)Azo]-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt adheres to a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and chemical identity. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and solubility.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Solubility	Freely soluble
Loss on Drying	Max. 5.0%
Heavy Metals (as Pb)	Max. 20 ppm
Sulfated Ash	Contact for details

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