Description

Trisodium 3-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. This compound matters because it serves as a critical building block for synthesizing high-performance dyes and pigments with excellent light and wash fastness properties. Industries such as textile manufacturing, ink production, and specialty chemical synthesis rely on this consistent-quality intermediate to achieve precise color shades and meet stringent quality standards.

Application

• Primary Intermediate for Reactive Dyes: Key starting material for manufacturing high-grade reactive dyes used in cotton and cellulose fiber dyeing.
• Textile Colorant Synthesis: Used in the production of acid and direct dyes for wool, silk, and nylon fabrics.
• Ink and Pigment Manufacturing: Essential component for creating colorants in printing inks, including for textiles and paper.
• Laboratory and R&D: Serves as a reference standard and research chemical for developing new dye structures and studying azo chemistry.
• Specialty Chemical Production: Intermediate for functional dyes used in biological staining, sensors, and other high-value applications.

Basic Information

Product Name	Trisodium 3-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate
CAS No.	62609-95-4
Molecular Formula	C20H12N4Na3O10S3
Molecular Weight	648.48 g/mol
Synonyms	Reactive Red 198 (Free Acid); Trisodium 5-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-1,3-naphthalenedisulfonate; C.I. Reactive Red 198; 1,3-Naphthalenedisulfonic acid, 5-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-, trisodium salt; Reactive Red 198, trisodium salt; Trisodium 3-[(4,5-dihydro-3-methyl-5-oxo-1-(4-sulfonatophenyl)-1H-pyrazol-4-yl)azo]naphthalene-1,5-disulfonate
EINECS	Contact for details

Quality Control

Our Trisodium 3-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(4-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,5-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	Contact for details

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