Description

3-[[5-[[4-[[[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-2,4-Dihydroxyphenyl]Azo]-4-Hydroxybenzenesulphonic Acid is a high-purity, complex azo dye intermediate essential for producing vibrant and stable colorants. Its sophisticated molecular structure provides excellent chromophoric properties, making it a critical component for manufacturers requiring precise and consistent coloration. This compound is primarily utilized by producers of industrial dyes, pigments, and specialty inks seeking reliable performance in demanding applications.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance red, orange, and brown azo dyes for textiles, leather, and paper.
• Specialty Ink Formulations: Used in the production of inks for packaging, security printing, and other applications requiring specific lightfastness and chemical resistance.
• Functional Colorants: Potential use in the development of colorants for plastics, coatings, and other polymer-based materials where thermal stability is important.
• Research & Development: Employed in chemical R&D for creating novel chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	3-[[5-[[4-[[[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-2,4-Dihydroxyphenyl]Azo]-4-Hydroxybenzenesulphonic Acid
CAS No.	84963-11-1
Molecular Formula	C29H21N9O9S
Molecular Weight	671.60 g/mol
Synonyms	Benzenesulfonic acid, 3-[[5-[[4-[[[4-[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo]phenyl]amino]carbonyl]phenyl]azo]-2,4-dihydroxyphenyl]azo]-4-hydroxy-; CI 27290; Acid Orange 156; Azo dye intermediate 84963-11-1; 4-Hydroxy-3-[[5-[[4-[[[4-[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo]phenyl]amino]carbonyl]phenyl]azo]-2,4-dihydroxyphenyl]azo]benzenesulfonic acid
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. Each lot is analyzed using modern analytical techniques, including HPLC and spectrophotometry, to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment to support your quality assurance processes.

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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown 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
Solubility	Soluble in alkaline water

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