Description

4-[4-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity azo dye intermediate, also known as CAS 83784-13-8, prized for its precise molecular structure and consistent chromophoric properties. It serves as a critical building block for synthesizing high-performance dyes and pigments, offering excellent color fastness and stability in demanding applications. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable intermediates for producing vibrant and durable colors.

Application

• Primary Intermediate for Azo Dyes: A key precursor in the synthesis of high-value, complex azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics requiring specific color shades and properties.
• Research & Development: Serves as a valuable reagent in chemical research for developing new chromophores and studying azo coupling reactions.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, such as sensitizers or functional materials.

Basic Information

Item	Detail
Product Name	4-[4-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	83784-13-8
Molecular Formula	C17H12ClN5O7S
Molecular Weight	465.82 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[(3-chloro-2-hydroxy-5-nitrophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; 3-Chloro-2-hydroxy-5-[(3-methyl-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl)azo]nitrobenzene; Azo dye intermediate 83784-13-8; 1-(4-Sulfophenyl)-3-methyl-4-[(3-chloro-2-hydroxy-5-nitrophenyl)azo]-5-pyrazolone; C.I. Azoic Coupling Component (related); Pyrazolone-based sulfonic acid azo dye
EINECS	Contact for details

Quality Control

Our production of 4-[4-[(3-Chloro-2-Hydroxy-5-Nitrophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing identity, purity, and related substances are provided to guarantee the material meets your specific 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Sulfated Ash	≤ 0.5%

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