Description

Pentasodium 4-amino-3-[[5-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulphonatophenyl]azo]-6-[(2,5-disulphonatophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonate is a high-purity, poly-sulfonated azo dye intermediate of significant industrial importance. This compound is valued for its excellent water solubility and chromophoric properties, making it a critical building block for creating vivid and stable colorants. It is primarily sought after by manufacturers in the specialty dyes and pigments sector, particularly for applications requiring high-performance coloring in textiles, inks, and advanced materials.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in textile dyeing and printing, especially for cotton and other cellulosic fibers.
• Acid Dye Production: Used in the formulation of acid dyes for coloring nylon, silk, wool, and modified acrylics.
• Inkjet Ink Formulations: Serves as a precursor for dyes in high-quality inkjet inks, providing bright colors and good lightfastness.
• Functional Colorants: Employed in the development of colorants for specialty papers, leather, and other industrial substrates.
• Research & Development: Used in chemical research for synthesizing novel chromophores and studying azo dye chemistry and properties.

Basic Information

Item	Details
Product Name	Pentasodium 4-amino-3-[[5-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulphonatophenyl]azo]-6-[(2,5-disulphonatophenyl)azo]-5-hydroxynaphthalene-2,7-disulphonate
CAS No.	69140-63-2
Molecular Formula	C33H15ClF2N8Na5O16S5
Molecular Weight	Contact for details
Synonyms	Reactive Black 5 (related precursor); C.I. 20505; Polyazo dye intermediate; Pentasodium salt of a tris-azo dye; 4-Amino-5-hydroxy-3,6-bis((2,5-disulfophenyl)azo)-2,7-naphthalenedisulfonic acid derivative; Chlorodifluoropyrimidinyl azo dye intermediate; High-sulfonation azo compound
EINECS	Contact for details

Quality Control

Our pentasodium azo dye intermediate is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and impurity profile, spectrophotometric analysis for color strength, and verification of key physical-chemical parameters. Certificates of Analysis (COA) documenting all test results are available upon request to ensure traceability and compliance with your specific manufacturing 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 after opening to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark colored powder or solid
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

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