Description

2,5-Dichloro-4-[4-[[5-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-2-Sulphophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, reactive dye intermediate of significant industrial importance. Its complex molecular structure, featuring a triazine ring and azo linkage, provides the versatile reactivity and chromophoric properties essential for synthesizing high-performance dyes and pigments. This compound is primarily sought by manufacturers in the textile, ink, and specialty chemical sectors who require consistent quality and reliable supply for producing vivid, colorfast products.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-quality reactive dyes used in textile dyeing and printing, particularly for cotton and cellulose fibers.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, where color strength and stability are critical.
• Specialty Chemical Production: Serves as a building block for advanced functional chemicals, including light-absorbing materials and photographic chemicals.
• Research & Development: Utilized in R&D laboratories for developing novel chromophores and studying azo-triazine chemistry.

Basic Information

Product Name	2,5-Dichloro-4-[4-[[5-[(4,6-Dichloro-1,3,5-Triazin-2-Yl)Amino]-2-Sulphophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	25489-31-0
Molecular Formula	C19H12Cl4N8O7S2
Molecular Weight	666.27 g/mol
Synonyms	Reactive Black 5 Intermediate; 2,5-Dichlorobenzenesulfonic acid, 4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; C.I. Reactive Black 5 precursor; Tetrasodium 4-amino-5-hydroxy-3-[[4-[[2-(sulfoxy)ethyl]sulfonyl]phenyl]azo]-6-(phenylamino)-2,7-naphthalenedisulfonate related compound; Azo Triazine Dye Intermediate; Benzenesulfonic acid, 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling and spectroscopic identification. A detailed Certificate of Analysis (COA) documenting purity, physical characteristics, and test results is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions

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