Description

5-[[4'-[[8-Amino-1-Hydroxy-7-[(2-Nitrophenyl)Azo]-3,6-Disulfo-2-Naphtyl]Azo]-1,1'-Biphenyl-4-Yl]Azo]-2-Hydroxybenzoic Acid Trisodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex polyazo 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 vivid, stable colors.

Application

• Primary intermediate for the synthesis of high-grade, polyazo direct dyes for cotton and cellulose fibers.
• Key precursor in manufacturing pigments for industrial inks, including packaging and printing inks.
• Used in the production of colorants for specialty coatings and paints requiring high lightfastness.
• Employed in research and development of novel functional dyes for non-textile applications.
• Potential use as a staining agent or colorimetric indicator in analytical chemistry and laboratory settings.

Basic Information

Product Name	5-[[4'-[[8-Amino-1-Hydroxy-7-[(2-Nitrophenyl)Azo]-3,6-Disulfo-2-Naphtyl]Azo]-1,1'-Biphenyl-4-Yl]Azo]-2-Hydroxybenzoic Acid Trisodium Salt
CAS No.	6360-62-9
Molecular Formula	C39H24N7Na3O12S2
Molecular Weight	947.73 g/mol
Synonyms	Benzoic acid, 5-[[4'-[[8-amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphthalenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, trisodium salt; C.I. Direct Brown 1:1; Direct Brown 1:1; Trisodium 5-({4'-[(8-amino-1-hydroxy-7-{[(2-nitrophenyl)diazenyl]}-3,6-disulfonato-2-naphthyl)diazenyl][1,1'-biphenyl]-4-yl}diazenyl)-2-hydroxybenzoate
EINECS	Contact for details

Quality Control

Our 5-[[4'-[[8-Amino-1-Hydroxy-7-[(2-Nitrophenyl)Azo]-3,6-Disulfo-2-Naphtyl]Azo]-1,1'-Biphenyl-4-Yl]Azo]-2-Hydroxybenzoic Acid Trisodium Salt is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance as a dye intermediate. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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