Description

Trisodium 3-[(2-chloro-4-nitrophenyl)azo]-4-hydroxy-5-[[2-hydroxy-4-[[3-hydroxy-4-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]phenyl]amino]phenyl]azo]naphthalene-2,7-disulphonate is a high-purity, complex azo dye intermediate of significant industrial importance. Its value lies in its role as a key precursor for synthesizing high-performance dyes and pigments, offering excellent color strength and structural versatility. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and stable colorants.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Pigment Manufacturing: Used in the production of organic pigments for applications in plastics, paints, and inks, providing excellent tintorial strength.
• Specialty Ink Formulation: Serves as a key component in formulating specialty printing inks, including those for packaging and security printing.
• Textile Dyeing and Printing: Enables the creation of specific, vibrant shades with good fastness properties in textile processing.
• Research & Development: Utilized in chemical R&D laboratories for developing novel chromophores and studying azo dye chemistry.
• Industrial Coatings: Can be incorporated into formulations for colored industrial coatings where specific color properties are required.

Basic Information

Product Name	Trisodium 3-[(2-chloro-4-nitrophenyl)azo]-4-hydroxy-5-[[2-hydroxy-4-[[3-hydroxy-4-[[4-[(4-nitro-2-sulphonatophenyl)amino]phenyl]azo]phenyl]amino]phenyl]azo]naphthalene-2,7-disulphonate
CAS No.	85631-89-6
Molecular Formula	C40H22ClN9Na3O16S4
Molecular Weight	1150.34 g/mol (approx.)
Synonyms	Reactive Black 5 intermediate; Trisodium 6-amino-4-hydroxy-3-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthyl]azo]-5-[[4-[(2,4-disulfophenyl)azo]phenyl]azo]-2,7-naphthalenedisulfonate (related isomer); C.I. Reactive Black 5 precursor; Azo dye intermediate 85631-89-6; Polyazo dye salt; Tetrasulfonated azo compound; Sulfonated aromatic azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Quality is verified through analytical methods including HPLC, UV-Vis spectroscopy, and titration. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance processes.

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 sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (Water)	Soluble
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	Contact for details

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