Description

4-[4-[2-Methoxy-5-(2-Sulfooxyethylsulfonyl)Phenylazo]-3-Methyl-5-Oxo-2-Pyrazolin-1-Yl]Benzenesulfonic Acid is a high-purity, reactive azo dye intermediate of significant commercial importance. Its value lies in its precise molecular structure, which enables the synthesis of high-performance dyes with excellent color fastness and brightness. This compound is essential for manufacturers in the textile and specialty chemical industries seeking to produce advanced, wash-fast reactive dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, wool, and nylon dyeing.
• Textile Colorant Production: Enables the manufacture of dyes with superior wash, light, and perspiration fastness for the textile industry.
• Specialty Pigment Synthesis: Used in the production of complex organic pigments for inks, coatings, and plastics requiring vibrant, stable colors.
• Research & Development: Serves as a critical reagent in chemical R&D for developing new chromophores and functional dyes.
• Fine Chemical Manufacturing: Employed in the synthesis of other sulfonated azo compounds for specialized applications.

Basic Information

Product Name	4-[4-[2-Methoxy-5-(2-Sulfooxyethylsulfonyl)Phenylazo]-3-Methyl-5-Oxo-2-Pyrazolin-1-Yl]Benzenesulfonic Acid
CAS No.	56892-20-7
Molecular Formula	C19H18N4O10S3
Molecular Weight	582.56 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-3-methyl-5-oxo-2-pyrazolin-1-yl]-; Reactive Dye Intermediate 56892-20-7; 1-Phenyl-3-methyl-4-[4-(2-methoxy-5-((2-sulfooxyethyl)sulfonyl)phenyl)azo]-5-pyrazolone-4'-sulfonic acid; Azo pyrazolone sulfonic acid derivative; C.I. Reactive Orange 13 intermediate
EINECS	Contact for details

Quality Control

Our production of 4-[4-[2-Methoxy-5-(2-Sulfooxyethylsulfonyl)Phenylazo]-3-Methyl-5-Oxo-2-Pyrazolin-1-Yl]Benzenesulfonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical data are provided with each shipment to guarantee traceability and quality assurance for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The compound is moisture-sensitive; ensure containers are sealed after use to prevent degradation.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm

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