Description

5-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-6-Hydroxynaphthalene-1-Sulphonic Acid is a high-purity synthetic organic compound belonging to the azo dye and pigment intermediate class. It serves as a critical building block for producing vivid and stable colorants, offering excellent tinctorial strength and compatibility. This intermediate is essential for manufacturers in the dyes and pigments industry seeking to develop specialized color products for textiles, inks, and other advanced materials.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key precursor in the synthesis of high-performance red, orange, and brown azo colorants.
• Textile Dyeing: Used in the manufacturing of dyes for coloring natural and synthetic fibers, valued for color fastness.
• Ink Formulations: Incorporated into the production of pigments for printing inks, including packaging and publication inks.
• Specialty Colorants: Employed in creating custom color solutions for plastics, coatings, and other industrial applications.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying structure-color relationships.

Basic Information

Item	Details
Product Name	5-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-6-Hydroxynaphthalene-1-Sulphonic Acid
CAS No.	93893-62-0
Molecular Formula	C20H16N4O5S
Molecular Weight	424.43 g/mol
Synonyms	6-Hydroxy-5-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)azo]naphthalene-1-sulfonic acid; 5-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-6-hydroxy-1-naphthalenesulfonic acid; C.I. Acid Orange 156; Azo dye intermediate OA-156; 1-Naphthalenesulfonic acid, 5-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-6-hydroxy-
EINECS	Contact for details

Quality Control

Our production of 5-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-6-Hydroxynaphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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