Description

Benzoic acid, 2-[[2-amino-6-[[4'-[[5-[(2,5-disulfophenyl)azo]-1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-5-nitro-, tetrasodium salt is a complex, high-purity azo dye intermediate of significant industrial importance. Its value lies in its role as a critical precursor for synthesizing high-performance dyes and pigments, offering excellent color strength and stability. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require reliable, consistent-quality intermediates for their production processes.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-grade reactive dyes for cotton and other cellulosic fibers.
• Textile Dyeing and Printing: Used to produce dyes that offer brilliant shades, excellent wash-fastness, and light-fastness for the textile industry.
• Inkjet and Digital Printing Inks: Serves as a precursor for pigments and dyes used in high-quality industrial and commercial printing inks.
• Specialty Pigments for Coatings: Employed in the manufacture of pigments for automotive, industrial, and decorative coatings requiring durability.
• Leather Dyeing: Used in the production of dyes for coloring leather with deep, uniform, and stable colors.
• Paper Coloring: An intermediate for dyes used in the coloring of specialty papers and paper products.
• Research & Development: Serves as a valuable chemical for R&D laboratories focusing on novel dye and functional material synthesis.

Basic Information

Item	Details
Product Name	Benzoic acid, 2-[[2-amino-6-[[4'-[[5-[(2,5-disulfophenyl)azo]-1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-5-nitro-, tetrasodium salt
CAS No.	75522-93-9
Molecular Formula	C55H34N10Na4O23S6
Molecular Weight	Approx. 1500.0 g/mol (Contact for exact details)
Synonyms	Reactive Black 5 Tetrasodium Salt; C.I. Reactive Black 5; Remazol Black B; Tetrasodium 8-[[4-[[4-[(2,5-Disulfophenyl)azo]-1-hydroxy-7-(phenylamino)-8-sulfo-2-naphthyl]azo]-6-methoxy-3-sulfophenyl]azo]-5-hydroxy-1-(4-nitrophenyl)azo-2,7-naphthalenedisulfonate; Benzoic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt (related); Azo Dye Intermediate 75522-93-9; Complex Azo Dye Salt; Tetranodium Azo Dye Precursor.
EINECS	Contact for details

Quality Control

Our Benzoic acid derivative is produced under stringent quality management systems to ensure batch-to-batch consistency and purity. The product undergoes comprehensive analytical testing, including HPLC for purity and impurity profile, spectrophotometric analysis for color value, and elemental analysis. We provide full traceability and Certificates of Analysis (COA) are available for every batch upon request, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 90% (Dye Content)
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	Max. 20 ppm
Ash Content (Sulfated)	Contact for details

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