Description

1-(4-Amino-2-Sulphophenyl)-4,5-Dihydro-5-Oxo-4-[(2-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid is a high-purity, complex azo pyrazole carboxylic acid derivative that serves as a critical intermediate for synthesizing high-performance dyes and pigments. Its precise molecular structure is engineered to provide excellent color fastness, thermal stability, and compatibility in demanding formulations. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to develop vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and cellulose fibers.
• Pigment Manufacturing: Used in the production of organic pigments for plastics, coatings, and inks, offering enhanced color strength.
• Textile Colorants: Integral to creating dyes with superior wash and light fastness for the textile industry.
• Specialty Chemical Synthesis: Serves as a versatile intermediate for research and development of novel functional dyes and optical materials.
• Analytical Chemistry: May be used as a standard or reagent in chromatographic analysis and quality control of dye products.

Basic Information

Item	Details
Product Name	1-(4-Amino-2-Sulphophenyl)-4,5-Dihydro-5-Oxo-4-[(2-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid
CAS No.	65180-69-0
Molecular Formula	C16H13N5O8S2
Molecular Weight	467.43 g/mol
Synonyms	4,5-Dihydro-5-oxo-1-(4-amino-2-sulfophenyl)-4-[(2-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-amino-2-sulfophenyl)-4-[(2-sulfophenyl)azo]-; C.I. Reactive Yellow 176 Intermediate; Azo Pyrazole Carboxylic Acid Derivative; Reactive Dye Intermediate Y-176; 65180-69-0; 4-[(2-Sulfophenyl)azo]-1-(4-amino-2-sulfophenyl)-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylic acid
EINECS	Contact for details

Quality Control

Our production of 1-(4-Amino-2-Sulphophenyl)-4,5-Dihydro-5-Oxo-4-[(2-Sulphophenyl)Azo]-1H-Pyrazole-3-Carboxylic Acid adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting all critical parameters 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 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 quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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