Description

2,4-Bis[[2,6-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and a sulfonic acid group, makes it a critical precursor for the production of specialized, high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop products with specific color fastness, solubility, and application properties.

Application

• Primary intermediate for the synthesis of high-value azo dyes and pigments used in textile coloration.
• Key component in the manufacture of specialty inks, including those for security printing and high-resolution digital applications.
• Precursor for functional dyes used in optical data storage, liquid crystal displays (LCDs), and non-linear optics.
• Used in research and development for creating novel colorants with enhanced lightfastness and thermal stability.
• Potential intermediate for analytical reagents and pH indicators due to its distinct chromophoric system.
• Employed in the development of sensitizers for photographic and photochemical processes.

Basic Information

Product Name	2,4-Bis[[2,6-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid
CAS No.	85959-46-2
Molecular Formula	C30H20N8O11S
Molecular Weight	700.59 g/mol
Synonyms	Benzenesulfonic acid, 2,4-bis[[2,6-dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]-; 2,4-Bis[(2,6-dihydroxy-3-((4-nitrophenyl)azo)phenyl)azo]benzenesulfonic acid; CI 27290; Acid Black 107; Azo dye intermediate 85959-46-2; 4-Nitroaniline based bis-azo dye acid
EINECS	Contact for details

Quality Control

Our production of 2,4-Bis[[2,6-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]Benzenesulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity, strength, and impurity profiles. Certificates of Analysis (COA) documenting all critical quality attributes are provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in NaOH)	Complete, clear solution

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