Description

Trisodium 5-[[2-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(2-Sulphonatophenyl)Azo]-1H-Pyrazol-1-Yl]-4-Sulphonatophenyl]Sulphonyl]Salicylate is a high-purity, water-soluble azo dye intermediate and colorant salt, essential for producing vivid and stable shades. Its value lies in its excellent solubility and compatibility, enabling precise formulation in demanding industrial processes. This compound is primarily needed by manufacturers in the textile dyeing, ink production, and specialty chemical synthesis sectors who require consistent quality and reliable performance.

Application

• Textile Dyeing and Printing: As a key intermediate for producing reactive and direct dyes for cotton, wool, and nylon.
• Ink Manufacturing: Used in the formulation of inks for jet printing, packaging, and security applications.
• Paper Coloration: Employed in the production of colored papers and paper products.
• Leather Dyeing: Provides color for finishing processes in the leather industry.
• Specialty Chemical Synthesis: Serves as a building block for synthesizing complex dyes and pigments.
• Biological Staining: Potential use in histological stains and laboratory indicators.

Basic Information

Item	Details
Product Name	Trisodium 5-[[2-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(2-Sulphonatophenyl)Azo]-1H-Pyrazol-1-Yl]-4-Sulphonatophenyl]Sulphonyl]Salicylate
CAS No.	6359-51-9
Molecular Formula	C23H14N3Na3O12S3
Molecular Weight	713.51 g/mol
Synonyms	Acid Yellow 40; C.I. 18950; Trisodium 5-[(2-(4,5-dihydro-3-methyl-5-oxo-4-[(2-sulfophenyl)azo]-1H-pyrazol-1-yl)-4-sulfophenyl)sulfonyl]-2-hydroxybenzoate; 5-[[2-[4,5-Dihydro-3-methyl-5-oxo-4-[(2-sulfophenyl)azo]-1H-pyrazol-1-yl]-4-sulfophenyl]sulfonyl]-2-hydroxybenzoic acid trisodium salt; Acid Leather Yellow 2G; Lissamine Yellow 2G; Supranol Yellow 3GL
EINECS	228-787-8

Quality Control

Our production of Trisodium 5-[[2-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(2-Sulphonatophenyl)Azo]-1H-Pyrazol-1-Yl]-4-Sulphonatophenyl]Sulphonyl]Salicylate adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and solubility are available upon request to support your quality assurance protocols.

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 to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	25.0% - 30.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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