Description

Sodium 3-[[5-[[4-[[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl)Azo]Anilino]Carbonyl]Phenyl]Azo]-2,4-Dihydroxyphenyl]Azo]-4-Hydroxybenzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vibrant and stable coloration, making it a critical precursor in the synthesis of specialized dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking consistent quality and performance in their colorant formulations.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and direct dyes for coloring cotton, wool, and nylon fibers.
• Ink Manufacturing: Used in the production of high-performance inks for packaging, printing, and digital applications.
• Specialty Pigments: Serves as a building block for creating organic pigments used in plastics, paints, and coatings.
• Leather Coloring: Employed in the formulation of dyes for the leather tanning and finishing industry.
• Paper Coloring: Utilized in the manufacture of dyes for specialty and decorative papers.
• Research & Development: Acts as a standard or precursor in chemical research for developing new chromophores and functional materials.

Basic Information

Product Name	Sodium 3-[[5-[[4-[[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl)Azo]Anilino]Carbonyl]Phenyl]Azo]-2,4-Dihydroxyphenyl]Azo]-4-Hydroxybenzenesulphonate
CAS No.	85188-21-2
Molecular Formula	C29H20N8Na2O10S
Molecular Weight	734.57 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-, disodium salt; C.I. Acid Yellow 219; Disodium 3-[[5-[[4-[[4-[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo]anilino]carbonyl]phenyl]azo]-2,4-dihydroxyphenyl]azo]-4-hydroxybenzenesulphonate; Acid Yellow 219; Azo dye intermediate Y-219.
EINECS	Contact for details

Quality Control

Our Sodium 3-[[5-[[4-[[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Yl)Azo]Anilino]Carbonyl]Phenyl]Azo]-2,4-Dihydroxyphenyl]Azo]-4-Hydroxybenzenesulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical properties is provided with each shipment to guarantee it meets your technical requirements.

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); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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