Description

Sodium 2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vivid and durable pigments. Its value lies in its precise molecular structure, which enables the synthesis of high-performance colorants with excellent light and wash fastness properties. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking reliable intermediates for quality color production. The product is supplied under strict quality control to ensure batch-to-batch consistency for demanding industrial applications.

Application

This specialized azo compound serves as a critical building block in colorant manufacturing. Its primary and related applications include:

• Textile Dye Synthesis: As a key intermediate for manufacturing reactive and direct dyes for cotton, wool, and synthetic fibers.
• Pigment Production: Used in the synthesis of high-performance organic pigments for plastics and masterbatches.
• Ink Formulations: A precursor for colorants used in printing inks, including packaging and publication inks.
• Industrial Coatings: Employed in creating pigments for automotive, industrial, and decorative coatings requiring specific color shades.
• Research & Development: Serves as a standard or starting material in chemical R&D for novel dye and pigment discovery.
• Leather Coloring: Used in the production of dyes for the leather tanning and finishing industry.

Basic Information

Product Name	Sodium 2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	94133-87-6
Molecular Formula	C22H14Cl3N4NaO4S
Molecular Weight	559.78 g/mol
Synonyms	Sodium 2,5-dichloro-4-[(2-chlorophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-ylbenzenesulfonate; 2,5-Dichloro-4-[4-[(2-chlorophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid sodium salt; Azo dye intermediate 94133-87-6; Benzenesulfonic acid, 2,5-dichloro-4-[4-[(2-chlorophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; CI 12715 (related class); Sodium salt of a tris-chlorinated phenylazopyrazolone sulfonate.
EINECS	Contact for details

Quality Control

Our production of Sodium 2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request, providing full traceability and compliance data for your quality assurance protocols.

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 when not in use to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to red-brown powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Conforms
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear solution

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