Description

4-Amino-3-[[4-[[(1-Anilinocarbonyl)-2-Oxopropyl]Azo]Phenyl]Azo]-6-[(2,5-Disulphophenyl)Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble polyazo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, wash-fast colors. Consistent quality and reliable supply of this intermediate are paramount for ensuring the final product's performance and compliance.

Application

This specialized chemical intermediate serves as a key building block in several advanced manufacturing processes. Its primary and related applications include:

• Primary precursor for reactive and direct dyes used in textile dyeing and printing, particularly for cotton and cellulose fibers.
• Manufacturing of high-grade pigments for industrial inks, including those used in packaging and security printing.
• Synthesis of colorants for specialty coatings and paints requiring specific lightfastness and chemical resistance.
• Intermediate in the production of leather dyes, providing deep, uniform coloration.
• Research and development chemical for creating novel chromophores and functional dyes in academic and industrial labs.
• Potential use in the formulation of color filters or imaging materials due to its specific light-absorption properties.

Basic Information

Product Name	4-Amino-3-[[4-[[(1-Anilinocarbonyl)-2-Oxopropyl]Azo]Phenyl]Azo]-6-[(2,5-Disulphophenyl)Azo]-5-Hydroxynaphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt
CAS No.	83399-69-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Black 5, potassium sodium salt; Remazol Black B; Reactive Black 5; Polyazo black dye intermediate; 5-Hydroxynaphthalene-2,7-disulfonic acid, 4-amino-3-((4-((1-(anilinocarbonyl)-2-oxopropyl)azo)phenyl)azo)-6-((2,5-disulfophenyl)azo)-, potassium sodium salt; CAS 17095-24-8 (related acid form); Vinylsulfone dye precursor.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity for downstream synthesis. Quality is verified through advanced analytical techniques including HPLC for assay and impurity profiling. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters such as purity, identity, and heavy metal content. We support our global clients with documentation that meets relevant supply chain and regulatory requirements.

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 stability and handling properties.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm
pH (1% Solution)	6.0 - 8.0

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