Description

4-Amino-3-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethyl-1,1'-Biphenyl-4-Yl]Azo]-1-Naphthalenesulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and functional groups, makes it a critical precursor for producing specialized dyes and pigments. This compound is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries for developing products with specific colorimetric and fastness properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, polyazo direct dyes and acid dyes for textiles like cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the production of pigments for inks requiring specific shades, stability, and compatibility, including packaging and security inks.
• Industrial Coatings and Paints: Employed in the manufacture of pigments for coatings where color consistency and durability are critical.
• Research & Development: Utilized in chemical research for studying azo compound chemistry, dye-sensitized solar cells (DSSCs), and as a model compound for analytical method development.
• Functional Material Synthesis: Potential use as a precursor for creating colorants with specific optical or electronic properties for advanced material applications.

Basic Information

Item	Details
Product Name	4-Amino-3-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethyl-1,1'-Biphenyl-4-Yl]Azo]-1-Naphthalenesulfonic Acid Sodium Salt
CAS No.	6405-98-7
Molecular Formula	C37H28N6O6S · xNa
Molecular Weight	Contact for details
Synonyms	Direct Brown 1; C.I. 30045; Azo Brown 1; 4-Amino-3-{[4'-[(2,4-dihydroxyphenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl}naphthalene-1-sulfonic acid sodium salt; Sodium 4-amino-3-{[4'-[(2,4-dihydroxyphenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl}-1-naphthalenesulfonate; 6405-98-7; Azo dye intermediate 6405-98-7
EINECS	Contact for details

Quality Control

Our production of 4-Amino-3-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethyl-1,1'-Biphenyl-4-Yl]Azo]-1-Naphthalenesulfonic Acid Sodium Salt adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation and spectrophotometry for color strength assessment, to ensure it meets precise customer specifications and consistent batch-to-batch performance. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Due to the complex azo structure, prolonged exposure to elevated temperatures or intense light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Brown to dark brown powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 5.0 %
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water; sparingly soluble in organic solvents

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