Description

4-[4-[[2,5-Dimethoxy-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing reactive and acid dyes, offering excellent color properties and stability. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-quality reactive dyes used for coloring cotton, viscose, and other cellulosic fibers.
• Acid Dye Production: Used in the manufacture of acid dyes for wool, silk, and nylon, providing strong color fastness.
• Leather Dyeing: Serves as a key component in dyes for the leather tanning and finishing industry.
• Specialty Ink Formulation: Employed in the production of inks for jet printing and other high-performance applications requiring specific chromophores.
• Research & Development: Used in chemical R&D for developing novel dye structures and studying azo chemistry.

Basic Information

Item	Details
Product Name	4-[4-[[2,5-Dimethoxy-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid, Sodium Salt
CAS No.	62121-76-0
Molecular Formula	C20H19N4NaO12S3
Molecular Weight	642.56 g/mol
Synonyms	Reactive Orange 16 Intermediate; Sodium 4-[4-[(2,5-dimethoxy-4-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonate; Benzenesulfonic acid, 4-[4-[[2,5-dimethoxy-4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; C.I. Reactive Orange 16 precursor; Azo dye intermediate 62121-76-0
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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 tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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