Description

Disodium 5-[[(2-Carboxyphenyl)Amino]Sulphonyl]-2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Benzoate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its core value lies in its role as a key precursor for synthesizing vibrant and stable azo dyes and pigments, particularly in applications demanding high color strength and specific hue characteristics. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop advanced coloring solutions. The CAS number for this compound is 130032-94-9.

Application

This versatile azo intermediate is engineered for high-performance colorant synthesis across several key industrial sectors.

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the production of acid, direct, and reactive dyes for textile fibers like nylon, wool, and silk.
• Pigment Manufacturing: Used in the synthesis of high-performance organic pigments for inks, plastics, and coatings, offering excellent tinting strength.
• Specialty Ink Formulations: A key component in creating inks for digital printing, packaging, and security applications requiring specific color properties.
• Laboratory & Research: Employed in R&D for developing novel chromophores and studying structure-color relationships in dye chemistry.
• Leather Dyeing: Utilized in the formulation of dyes for the leather tanning and finishing industry.
• Paper Coloring: Can be used in the production of dyes for specialty paper and board products.

Basic Information

Item	Details
Product Name	Disodium 5-[[(2-Carboxyphenyl)Amino]Sulphonyl]-2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Benzoate
CAS No.	130032-94-9
Molecular Formula	C24H18N5Na2O7S
Molecular Weight	573.47 g/mol
Synonyms	Acid Orange 156 (disodium salt); C.I. 26501; 5-[[(2-Carboxyphenyl)amino]sulfonyl]-2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]benzoic acid disodium salt; Benzoic acid, 5-[[(2-carboxyphenyl)amino]sulfonyl]-2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, disodium salt; Azo dye intermediate 130032-94-9; Disodium 2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-5-[(2-sulfophenyl)amino]sulfonyl]benzoate
EINECS	Contact for details

Quality Control

Our production of Disodium 5-[[(2-Carboxyphenyl)Amino]Sulphonyl]-2-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]Benzoate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and solubility. Our quality systems are designed to meet the exacting standards of the dye and pigment manufacturing industry.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, the container should be opaque or stored in darkness to prevent degradation. Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.