Description

2-[[[4,5-Dihydro-3-Methyl-1-(2-Methyl-4-Sulfophenyl)-5-Oxo-1H-Pyrazol]-4-Yl]Azo]-4-Sulfobenzoic Acid is a high-purity, water-soluble azo dye intermediate valued for its precise chromophoric properties and consistent performance. This compound is essential for synthesizing specialized dyes and pigments that require excellent lightfastness and color strength. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-quality colorants.

Application

• Textile Dye Intermediate: A key precursor for synthesizing reactive and acid dyes used in coloring cotton, wool, and nylon fibers.
• Inkjet Ink Formulation: Used in the production of high-performance pigments for industrial and commercial printing inks, ensuring vibrant color output.
• Specialty Pigment Synthesis: Serves as a building block for creating complex organic pigments with enhanced durability for coatings and plastics.
• Laboratory Reagent: Employed in research and development for studying azo coupling reactions and dye chemistry.
• Paper Coloring: Utilized in the manufacture of dyes for high-grade paper products requiring specific colorfastness.
• Biological Staining: Potential use as a staining agent in histological applications due to its azo structure.

Basic Information

Product Name	2-[[[4,5-Dihydro-3-Methyl-1-(2-Methyl-4-Sulfophenyl)-5-Oxo-1H-Pyrazol]-4-Yl]Azo]-4-Sulfobenzoic Acid
CAS No.	68957-71-1
Molecular Formula	C18H16N4O8S2
Molecular Weight	480.47 g/mol
Synonyms	Benzoic acid, 2-[[[4,5-dihydro-3-methyl-1-(2-methyl-4-sulfophenyl)-5-oxo-1H-pyrazol-4-yl]azo]-4-sulfo-; C.I. Acid Yellow 219; Acid Yellow 219; 2-[(4,5-Dihydro-3-methyl-5-oxo-1-(2-methyl-4-sulfophenyl)-1H-pyrazol-4-yl)azo]-4-sulfobenzoic acid; 4-Sulfo-2-[[4,5-dihydro-3-methyl-5-oxo-1-(2-methyl-4-sulfophenyl)-1H-pyrazol-4-yl]azo]benzoic acid; 68957-71-1; Azo dye intermediate YA
EINECS	Contact for details

Quality Control

Our 2-[[[4,5-Dihydro-3-Methyl-1-(2-Methyl-4-Sulfophenyl)-5-Oxo-1H-Pyrazol]-4-Yl]Azo]-4-Sulfobenzoic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chroma value, and batch-to-batch reproducibility suitable for industrial synthesis. Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are available upon request.

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 nature, the container must be kept tightly sealed after each use to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear Solution

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