Description

2-[[1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-(sulphomethyl)-3-pyridyl]azo]-5-[[4-fluoro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]benzene-1,4-disulphonic acid is a high-performance, water-soluble azo dye intermediate characterized by its complex poly-sulfonated structure. This compound is engineered to deliver exceptional color strength, lightfastness, and wash fastness in demanding applications. It is primarily required by manufacturers in the textile, leather, and specialty ink industries for producing vibrant and durable shades.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes for cotton, viscose, and other cellulosic fibers.
• Textile Printing and Dyeing: Used in formulations for printing inks and dye baths requiring excellent wet fastness properties.
• Leather Coloring: Employed in the production of dyes for leather finishing, providing rich, stable colors.
• Paper Dyeing: Suitable for specialty paper grades where high color value and stability are critical.
• Inkjet Inks: A potential component in the synthesis of pigments for industrial inkjet printing applications.
• Research & Development: Serves as a valuable building block in chemical R&D for novel chromophores and functional dyes.

Basic Information

Product Name	2-[[1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-(sulphomethyl)-3-pyridyl]azo]-5-[[4-fluoro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]benzene-1,4-disulphonic acid
CAS No.	85508-11-8
Molecular Formula	C25H22FN8O13S4
Molecular Weight	822.73 g/mol
Synonyms	Reactive Black 5 Intermediate; C.I. Reactive Black 5 Precursor; 2-[[1-Ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-5-(sulfomethyl)-3-pyridinyl]azo]-5-[[4-fluoro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-1,4-benzenedisulfonic acid; Azo Dye Intermediate 85508-11-8; Poly-sulfonated Azo Dye Intermediate; Black 5 Dye Intermediate; Tetrasulfonated Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed using modern analytical techniques including HPLC and spectrophotometry to verify critical parameters such as purity, color strength, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to support your quality assurance processes.

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); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect performance.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	≥ 98% of standard
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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