Description

2,7-Naphthalenedisulfonic Acid, 4-Amino-3-[[4-[(5-Chloro- 2,6-Difluoro-4-Pyrimidinyl)Amino]Phenyl]Azo]-6-[(2 ,5-Disulfophenyl)Azo]-5-Hydroxy-, Tetrasodium Salt is a high-purity, complex azo dye intermediate with a distinctive polycyclic structure. This compound is valued for its ability to impart specific color properties and functional characteristics in advanced dye synthesis. It is primarily required by manufacturers in the textile, specialty ink, and high-performance pigment industries seeking to develop products with enhanced color fastness and stability.

Application

• Key Intermediate for Reactive Dyes: Synthesis of high-grade reactive dyes for cotton and cellulose fiber dyeing, offering excellent wash and light fastness.
• Specialty Ink Production: Manufacturing of inks for security printing, digital textiles, and other applications requiring precise color formulation.
• Functional Pigment Development: Used in creating pigments for plastics, coatings, and other materials where thermal and chemical stability are critical.
• Research & Development: Serves as a building block in academic and industrial R&D for novel chromophores and functional materials.
• Analytical Chemistry: Potential use as a staining agent or a standard in chromatographic analysis due to its distinct structure.

Basic Information

Item	Details
Product Name	2,7-Naphthalenedisulfonic Acid, 4-Amino-3-[[4-[(5-Chloro- 2,6-Difluoro-4-Pyrimidinyl)Amino]Phenyl]Azo]-6-[(2 ,5-Disulfophenyl)Azo]-5-Hydroxy-, Tetrasodium Salt
CAS No.	75198-89-9
Molecular Formula	C32H16ClF2N9Na4O16S4
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (Tetrasodium Salt); C.I. 20505; Tetrasodium 4-amino-5-hydroxy-3-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]phenyl]azo]-6-[(2,5-disulfophenyl)azo]-2,7-naphthalenedisulfonate; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]phenyl]azo]-6-[(2,5-disulfophenyl)azo]-5-hydroxy-, sodium salt (1:4); Reactive Black B; Remazol Black B
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques like HPLC to verify the assay and impurity profile. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with every shipment to support your quality assurance protocols.

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
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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