Description

1,5-Naphthalenedisulfonic acid, 2-8-4-chloro-6-3-4-chloro-6-7-(1,5-disulfo-2-naphthalenyl)azo-8-hydroxy-3,6-disulfo-1-naphthalenylamino-1,3,5-triazin-2-ylaminomethylphenylamino-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, octasodium salt is a high-purity, multi-sulfonated azo dye intermediate of significant industrial importance. Its complex, polyfunctional structure provides exceptional binding affinity and chromophoric properties, making it a critical precursor for high-performance colorants. This compound is essential for manufacturers in the textile, specialty ink, and advanced materials sectors seeking to produce dyes with superior fastness, solubility, and specific technical characteristics.

Application

• Production of Reactive and Direct Dyes: Serves as a key intermediate for synthesizing high-value, water-soluble azo dyes for cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the manufacture of inks for jet printing, security printing, and other applications requiring precise color and stability.
• Functional Dyes for Advanced Materials: A precursor for dyes used in liquid crystal displays (LCDs), optical data storage, and other high-tech photonic applications.
• Biological Staining Reagents: Potential use in the synthesis of stains for histology and cytology due to its strong chromophore and ionic groups.
• Catalyst and Ligand Synthesis: The sulfonate groups and aromatic structure can be utilized to create water-soluble ligands for metal catalysis.
• Research & Development: Employed in chemical research for developing new chromophores, polymeric dyes, and sensor materials.

Basic Information

Item	Details
Product Name	1,5-Naphthalenedisulfonic acid, 2-8-4-chloro-6-3-4-chloro-6-7-(1,5-disulfo-2-naphthalenyl)azo-8-hydroxy-3,6-disulfo-1-naphthalenylamino-1,3,5-triazin-2-ylaminomethylphenylamino-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, octasodium salt
CAS No.	186554-26-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 5 (Octasodium Salt); Reactive Black 5; Remazol Black B; Octasodium 4-amino-5-hydroxy-3,6-bis((4-((2-(sulfonatooxy)ethyl)sulfonyl)phenyl)azo)naphthalene-2,7-disulfonate (related common structure); Polyazo dye intermediate; Octasodium salt of a sulfonated azo dye; Multi-sulfonated naphthalene azo compound; 1,3,5-Triazine-based 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 performance. Quality is verified through analytical methods including HPLC, UV-Vis spectroscopy, and titration to confirm critical parameters such as purity, color strength, and sulfonation degree. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (Dye Content)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	7.0 - 9.0
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.