Description

Sodium 4-[4-[[4-[[Benzyl(p-Tolyl)Sulphonyl]Amino]Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-3,5-Dichlorobenzenesulphonate is a high-purity, synthetic organic chemical compound belonging to the class of azo pyrazolone dyes. This product is valued for its excellent chromophoric properties and chemical stability, making it a critical intermediate in the production of specialized colorants. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries for developing high-performance pigments and dyes with specific fastness and hue requirements.

Application

• Primary Intermediate for High-Performance Pigments: Used in the synthesis of complex organic pigments for automotive and industrial coatings requiring superior weatherfastness and color strength.
• Specialty Dye Manufacturing: Serves as a key precursor for producing azo dyes used in textile dyeing and printing, particularly for synthetic fibers like polyester and nylon.
• Functional Colorant for Inks: Employed in the formulation of specialty printing inks, including those for security applications and high-quality packaging, where precise color and stability are paramount.
• Research & Development: Utilized in chemical R&D laboratories for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Plastics and Polymer Coloring: Acts as a colorant intermediate for masterbatches used in coloring engineering plastics and synthetic polymers.

Basic Information

Product Name	Sodium 4-[4-[[4-[[Benzyl(p-Tolyl)Sulphonyl]Amino]Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-3,5-Dichlorobenzenesulphonate
CAS No.	94213-47-5
Molecular Formula	C36H28Cl2N5NaO6S2
Molecular Weight	776.65 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[[4-[[(4-methylphenyl)sulfonyl](phenylmethyl)amino]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-3,5-dichloro-, sodium salt (1:1); Sodium 3,5-dichloro-4-[4,5-dihydro-3-methyl-4-[[4-[[(4-methylphenyl)sulfonyl](phenylmethyl)amino]phenyl]azo]-5-oxo-1H-pyrazol-1-yl]benzenesulfonate; Azo pyrazolone dye intermediate; CI Disperse Yellow 241 (related); 94213-47-5; Benzyl(p-tolyl)sulfonyl amino phenyl azo pyrazolone sulfonate sodium salt
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 purity. Quality is verified through a comprehensive suite of analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

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). Keep the container sealed to protect the product from moisture and contamination. Observe all local regulations for the storage of industrial chemicals.

Specification

Item	Specification
Appearance	Yellow to orange-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in DMF, DMSO; sparingly soluble in water

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