Description

1,5-Naphthalenedisulfonic Acid, 2-[[8-[[(2,3-Dichloro-6-Quinoxalinyl) Carbonyl]Amino]-1-Hydroxy-3,6-Disulfo -2-Naphthalenyl]Azo]-, Tetrasodium Salt is a high-purity, water-soluble synthetic dye intermediate characterized by its complex polycyclic and azo-based structure. This compound is valued for its ability to impart specific color properties and act as a functional building block in advanced chemical synthesis. It is primarily required by manufacturers in the specialty dyes and pigments, textile processing, and advanced materials research sectors.

Application

• Reactive Dye Synthesis: A key intermediate for producing high-performance reactive dyes used in textile coloration, particularly for cotton and other cellulosic fibers.
• Functional Pigment Manufacturing: Used in the creation of specialized pigments for inks, coatings, and plastics where specific lightfastness and stability are required.
• Analytical Chemistry Reagent: Serves as a chromogenic agent or a complexing intermediate in certain analytical and diagnostic applications.
• Research & Development: Employed in academic and industrial R&D for studying azo dye chemistry, photophysical properties, and novel material synthesis.
• Biomolecular Staining: Potential use as a staining agent in histological or biological assays due to its chromophoric nature.

Basic Information

Product Name	1,5-Naphthalenedisulfonic Acid, 2-[[8-[[(2,3-Dichloro-6-Quinoxalinyl) Carbonyl]Amino]-1-Hydroxy-3,6-Disulfo -2-Naphthalenyl]Azo]-, Tetrasodium Salt
CAS No.	72639-31-7
Molecular Formula	C29H14Cl2N6Na4O15S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. 20505; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-[[7-[[(2,3-dichloro-6-quinoxalinyl)carbonyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-, tetrasodium salt; Tetrasodium 4-amino-5-hydroxy-6-({7-[(2,3-dichloroquinoxaline-6-carbonyl)amino]-1-hydroxy-3-sulphonatonaphthalen-2-yl}azo)naphthalene-2,7-disulphonate; Levafix Black EB; Remazol Black B; Sumifix Black B
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing including HPLC, spectrophotometry, and elemental analysis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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). This material is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 90% (Dye Content)
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	7.0 - 9.0

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