Description

Tetrasodium 3-[[1-hydroxy-6-[[[[4-[(8-hydroxy-3,6-disulphonato-1-naphthyl)azo]-2-methoxy-5-methylphenyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]-p-anisate is a high-purity, water-soluble azo dye intermediate characterized by its complex polyfunctional structure. This compound is essential for synthesizing advanced, colorfast dyes and pigments, particularly in applications demanding high stability and specific chromatic properties. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance colorants.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes used on cotton, wool, and nylon fibers.
• Ink Manufacturing: Used in the production of high-quality pigments for industrial inks, including packaging and security inks.
• Specialty Coatings: Serves as a precursor for colorants in coatings requiring specific lightfastness and chemical resistance.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper and decorative laminates.
• Leather Finishing: Used in dye formulations for achieving deep, uniform colors on leather goods.
• Research & Development: A valuable chemical building block in R&D for developing novel chromophores and functional dyes.

Basic Information

Product Name	Tetrasodium 3-[[1-hydroxy-6-[[[[4-[(8-hydroxy-3,6-disulphonato-1-naphthyl)azo]-2-methoxy-5-methylphenyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]-p-anisate
CAS No.	71873-47-7
Molecular Formula	C40H24N6Na4O19S4
Molecular Weight	1124.88 g/mol (approx.)
Synonyms	Reactive Black 5 precursor; Tetrasodium 4,4'-(1-hydroxy-8-acetamido-3,6-disulfo-2,7-naphthalene bis(azo))bis(5-amino-4-hydroxy-2,7-naphthalenedisulfonate) derivative; Azo dye intermediate 71873-47-7; C.I. Reactive Black 5 related compound; Polyazo dye intermediate; Tetrasodium salt of a hydroxynaphthyl azo benzene derivative; Sulfonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.