Description

Disodium 2,5-Dichloro-4-[4-[[5-[(5-Chloro-2,6-Difluoro-4-Pyrimidyl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble reactive dye intermediate known for its complex heterocyclic structure. This compound is critical for synthesizing high-performance dyes and pigments that require excellent color fastness, brightness, and stability under various conditions. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to produce advanced coloring agents.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-grade reactive dyes used in cotton, wool, and nylon fiber dyeing.
• Textile Industry: Imparts vibrant, wash-fast colors with strong covalent bonds to cellulose fibers.
• Inkjet Ink Formulation: Used in the production of specialty inks for digital textile printing, offering superior color gamut and durability.
• Pigment Manufacturing: Serves as a precursor for creating complex organic pigments with enhanced thermal and light stability.
• Research & Development: Employed in chemical R&D for developing new chromophores and functional dyes.
• Leather Dyeing: Used in formulations for dyeing leather goods, providing deep, uniform penetration and color retention.

Basic Information

Item	Details
Product Name	Disodium 2,5-Dichloro-4-[4-[[5-[(5-Chloro-2,6-Difluoro-4-Pyrimidyl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	72379-41-0
Molecular Formula	C26H14Cl3F2N7Na2O8S2
Molecular Weight	832.89 g/mol
Synonyms	Reactive Red 238; C.I. Reactive Red 238; Disodium 5-[(5-chloro-2,6-difluoropyrimidin-4-yl)amino]-4-[2-[4-(2,5-dichloro-4-sulfonatophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl]diazenyl]-2-sulfobenzoate; Benzenesulfonic acid, 2,5-dichloro-4-[4-[[5-[(5-chloro-2,6-difluoro-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, disodium salt; C.I. 182155; Reactive Red Dye Intermediate 72379-41-0
EINECS	Contact for details

Quality Control

Our Disodium 2,5-Dichloro-4-[4-[[5-[(5-Chloro-2,6-Difluoro-4-Pyrimidyl)Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. All products undergo rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided with every shipment to guarantee compliance with your technical 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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