Description

2-Hydroxy-5-[[4-[[(6-Methyl-2-Pyridinyl)Amino]Sulfonyl]Phenyl]Azo]Benzoic Acid is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which is critical for synthesizing specialized dyes and pigments with specific colorimetric properties. It is primarily required by manufacturers in the fine chemicals, specialty dyes, and research sectors for applications demanding consistent quality and reliable performance.

Application

• Primary Intermediate for Azo Dyes and Pigments: Serves as a key building block in the synthesis of high-performance, color-fast azo dyes used in textiles, inks, and coatings.
• Analytical Chemistry Reagent: Used as a chromogenic agent or complexometric indicator in specific spectrophotometric and titrimetric analyses.
• Research & Development: Employed in academic and industrial R&D for studying azo coupling reactions, dye properties, and photochemical behavior.
• Specialty Chemical Synthesis: Acts as a precursor for creating more complex sulfonamide- and azo-functionalized molecules for specialized applications.
• Potential Use in Non-textile Colorants: May be investigated for use in coloring plastics, paper, or other polymeric materials requiring specific shade and stability.

Basic Information

Product Name	2-Hydroxy-5-[[4-[[(6-Methyl-2-Pyridinyl)Amino]Sulfonyl]Phenyl]Azo]Benzoic Acid
CAS No.	42753-55-9
Molecular Formula	C19H16N4O5S
Molecular Weight	412.42 g/mol
Synonyms	5-[[4-[[(6-Methyl-2-pyridinyl)amino]sulfonyl]phenyl]azo]-2-hydroxybenzoic acid; 2-Hydroxy-5-[(4-{[(6-methylpyridin-2-yl)amino]sulfonyl}phenyl)diazenyl]benzoic acid; Benzoic acid, 2-hydroxy-5-[[4-[[(6-methyl-2-pyridinyl)amino]sulfonyl]phenyl]azo]-; C.I. 19145; Acid Yellow 219; Azo dye intermediate Y-219
EINECS	Contact for details

Quality Control

Our 2-Hydroxy-5-[[4-[[(6-Methyl-2-Pyridinyl)Amino]Sulfonyl]Phenyl]Azo]Benzoic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 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.