Description

4-Amino-5-Hydroxy-3-[[4-[(2-Hydroxy-6-Sulpho-1-Naphthyl)Azo]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, polyazo-based dye intermediate and specialty chemical. This compound is valued for its ability to impart strong, vibrant colors and its role as a critical precursor in the synthesis of complex dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance, polyazo direct and reactive dyes for textiles, especially cotton and cellulose fibers.
• Ink Manufacturing: Used in the production of colorants for industrial inks, including those for packaging and specialty printing applications.
• Pigment Synthesis: Serves as a precursor in the manufacture of organic pigments used in plastics, paints, and coatings.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying dye-sensitized systems.
• Analytical Reagent: Can be utilized as a staining agent or colorimetric indicator in specific laboratory and analytical procedures.

Basic Information

Product Name	4-Amino-5-Hydroxy-3-[[4-[(2-Hydroxy-6-Sulpho-1-Naphthyl)Azo]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	93962-59-5
Molecular Formula	C32H20N8Na4O14S4
Molecular Weight	~1012.86 g/mol (as sodium salt)
Synonyms	Acid Black 210; C.I. 300310; Direct Black 210; Sodium 4-amino-5-hydroxy-3-[[4-[(2-hydroxy-6-sulphonato-1-naphthyl)azo]phenyl]azo]-6-(phenylazo)naphthalene-2,7-disulphonate; 4-Amino-5-hydroxy-3,6-bis(phenylazo)-2,7-naphthalenedisulfonic acid derivative; Polyazo dye intermediate; Tetrasodium salt of a polyazo dye acid.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for industrial synthesis. Quality is verified through comprehensive analytical testing, including HPLC for purity and identity confirmation. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to support your quality assurance systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the original container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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