Description

Trisodium 4-[[8-Amino-7-[[4'-[(2-Amino-4-Hydroxyphenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo]Benzoate is a high-purity, water-soluble azo dye intermediate characterized by its complex polyazo structure and multiple sulfonate groups. This compound matters for its role as a critical precursor in synthesizing high-value, colorfast dyes and pigments, particularly for demanding applications where wash-fastness and light stability are paramount. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, durable colors.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes used on cotton, wool, and nylon, offering excellent wash and light fastness.
• Ink Manufacturing: Used in the production of high-performance inks for digital textile printing and specialty packaging, providing intense color strength.
• Leather Coloring: Employed in the formulation of dyes for leather finishing, ensuring deep, uniform penetration and color retention.
• Paper Coloring: Suitable for the manufacture of dyes used in high-quality paper and paperboard products.
• Research & Development: Serves as a valuable building block in chemical R&D for developing novel chromophores and functional dyes.
• Specialty Coatings: Can be utilized in the creation of colored coatings where specific spectral properties are required.

Basic Information

Product Name	Trisodium 4-[[8-Amino-7-[[4'-[(2-Amino-4-Hydroxyphenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo]Benzoate
CAS No.	93803-39-5
Molecular Formula	C39H25N7Na3O11S2
Molecular Weight	924.75 g/mol
Synonyms	Benzoic acid, 4-[[8-amino-7-[[4'-[(2-amino-4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-1-hydroxy-3,6-disulfo-2-naphthalenyl]azo]-, trisodium salt; C.I. Direct Brown 115; Direct Brown 115; Trisodium 4-[(8-amino-7-{[4'-({2-amino-4-hydroxyphenyl}diazenyl)-[1,1'-biphenyl]-4-yl]diazenyl}-1-hydroxy-3,6-disulfonato-2-naphthyl)diazenyl]benzoate; Polyazo dye intermediate
EINECS	Contact for details

Quality Control

Our Trisodium 4-[[8-Amino-7-[[4'-[(2-Amino-4-Hydroxyphenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]-1-Hydroxy-3,6-Disulphonato-2-Naphthyl]Azo]Benzoate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided to guarantee it meets your specific application 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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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