Description

Disodium Hydrogen 2-[[1-[4-[2-(4-Amino-2-Sulphonatophenyl)Vinyl]-3-Sulphonatophenyl]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzoate is a high-purity, water-soluble azo dye intermediate characterized by its complex, multi-functional molecular structure. This compound is essential for synthesizing advanced, high-performance dyes and pigments, offering superior color strength and stability in demanding applications. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant, lightfast, and wash-fast colorants.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes for cotton, wool, and nylon, providing excellent wash and light fastness.
• Inkjet Inks: Used in the production of high-quality colorants for industrial and photographic-grade inks, ensuring brilliant color reproduction and stability.
• Specialty Coatings: Serves as a pigment precursor in coatings for plastics, automotive finishes, and other industrial applications requiring durable color.
• Paper Coloring: Employed in the manufacture of dyes for high-grade paper and packaging materials.
• Biological Staining: Potential use as an intermediate for developing stains and indicators in analytical and diagnostic applications.
• Liquid Crystal Display (LCD) Color Filters: Can be utilized in the synthesis of dyes for advanced electronic display technologies.

Basic Information

Product Name	Disodium Hydrogen 2-[[1-[4-[2-(4-Amino-2-Sulphonatophenyl)Vinyl]-3-Sulphonatophenyl]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzoate
CAS No.	68227-65-6
Molecular Formula	C31H23N5Na2O10S2
Molecular Weight	735.65 g/mol
Synonyms	Benzoic acid, 2-[[1-[4-[2-(4-amino-2-sulfophenyl)ethenyl]-3-sulfophenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-, disodium salt; C.I. Reactive Yellow 95; Reactive Yellow 95; Disodium 2-[(1-{4-[2-(4-amino-2-sulfonatophenyl)vinyl]-3-sulfonatophenyl}-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo]benzoate; 68227-65-6; Azo dye intermediate Y-95; Disodium salt of azo pyrazolone dye.
EINECS	Contact for details

Quality Control

Our production of Disodium Hydrogen 2-[[1-[4-[2-(4-Amino-2-Sulphonatophenyl)Vinyl]-3-Sulphonatophenyl]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl]Azo]Benzoate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Freely soluble

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