Description

4-Amino-5-Hydroxy-3-[[4'-[(2-Hydroxy-1-Naphthyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, polyazo dye intermediate of significant industrial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, colorfast products with specific technical characteristics.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-grade, complex azo dyes for textiles and fibers.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and industrial coatings requiring high color strength and stability.
• Specialty Colorants: Employed in the formulation of specialized colorants for advanced applications in electronics or security inks.
• Research & Development: A valuable compound for chemical R&D focused on novel dye structures and chromophore studies.
• Textile Dyeing: As a precursor for dyes used in dyeing natural and synthetic fabrics, particularly where specific shade and fastness properties are required.

Basic Information

Item	Details
Product Name	4-Amino-5-Hydroxy-3-[[4'-[(2-Hydroxy-1-Naphthyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	85750-05-6
Molecular Formula	C48H30N8Na3O12S3
Molecular Weight	~1068.98 g/mol (Contact for exact details)
Synonyms	Acid Black 210; C.I. 300310; Sodium 4-amino-5-hydroxy-3-((4'-((2-hydroxy-1-naphthyl)azo)[1,1'-biphenyl]-4-yl)azo)-6-((4-sulfophenyl)azo)naphthalene-2,7-disulfonate; Polyazo dye intermediate; Azo dye precursor; Trisodium 4-amino-5-hydroxy-3,6-bis[(E)-phenyldiazenyl]-3'-[(E)-2-naphtholdiazenyl][1,1'-biphenyl]-4,4'-diylbis(azo)bis(naphthalene-2,7-disulfonate) (IUPAC variant); Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Contact for details
Solubility	Soluble in water
Heavy Metals	< 20 ppm

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