Description

2,7-Naphthalenedisulfonic Acid, 5-Amino-3-4-4-(8-Amino-1-Hydroxy-3,6-Disulfo-2-Naphthalenyl)Azo-2-Methylphenylazophenylazo-4-Hydroxy-, Lithium Sodium Salt is a high-purity, complex azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which provides excellent chromophoric properties and water solubility due to its multiple sulfonic acid groups. It is primarily required by manufacturers in the dyes and pigments, textile processing, and specialty chemical synthesis industries for producing high-performance colorants.

Application

• Key Intermediate for Reactive and Direct Dyes: Serves as a critical building block in the synthesis of high-value, water-soluble azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments requiring specific shade, brightness, and fastness properties.
• Functional Dye Synthesis: Applicable in creating dyes for non-textile uses, such as inks, coatings, and imaging technologies.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be used as a standard or reagent in chromatographic and spectroscopic methods for dye analysis.

Basic Information

Product Name	2,7-Naphthalenedisulfonic Acid, 5-Amino-3-4-4-(8-Amino-1-Hydroxy-3,6-Disulfo-2-Naphthalenyl)Azo-2-Methylphenylazophenylazo-4-Hydroxy-, Lithium Sodium Salt
CAS No.	124605-82-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 5, Lithium Sodium Salt; Reactive Black 5 Li/Na Salt; 5-Amino-3-[[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthalenyl)azo]-2-methylphenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic Acid Lithium Sodium Salt; Remazol Black B Li/Na Salt; C.I. 20505; Complex Azo Dye Intermediate; Tetrasulfonated Azo Dye Salt
EINECS	Contact for details

Quality Control

Our production of this specialty chemical adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Completely soluble
Heavy Metals	Contact for details

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