Description

Trisodium 6-[(2,4-Diaminophenyl)Azo]-4-Hydroxy-3-[(4-Sulphonato-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments with excellent color fastness and stability. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking to produce vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Leather Dyeing: Used in the production of dyes for achieving deep, uniform colors on leather goods with good penetration.
• Inkjet Inks: Serves as a precursor for pigments used in high-performance industrial and textile inkjet printing.
• Paper Coloring: Employed in the manufacture of dyes for specialty paper products requiring specific color properties.
• Research & Development: Used in chemical R&D for developing novel azo compounds and studying dye chemistry.

Basic Information

Product Name	Trisodium 6-[(2,4-Diaminophenyl)Azo]-4-Hydroxy-3-[(4-Sulphonato-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	69178-38-7
Molecular Formula	C26H16N6Na3O11S3
Molecular Weight	Contact for details
Synonyms	6-[(2,4-Diaminophenyl)azo]-4-hydroxy-3-[(4-sulfo-1-naphthyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt; C.I. Reactive Black 5 intermediate; Trisodium 4-amino-5-hydroxy-3-[(4-sulphonato-1-naphthyl)azo]-6-[(2,4-diaminophenyl)azo]naphthalene-2,7-disulphonate; Reactive Black 5 precursor; Azo dye intermediate 69178-38-7; Tetrasodium? 6-[(2,4-diaminophenyl)azo]-4-hydroxy-3-[(4-sulfonato-1-naphthalenyl)azo]-2,7-naphthalenedisulfonate (variation)
EINECS	Contact for details

Quality Control

Our production of Trisodium 6-[(2,4-Diaminophenyl)Azo]-4-Hydroxy-3-[(4-Sulphonato-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance and regulatory compliance needs.

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 when not in use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (in Water)	Completely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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