Description

Disodium p-[4,5-Dihydro-5-Imino-4-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble reactive dye intermediate characterized by its complex azo-pyrazole structure. This compound is engineered to provide exceptional color strength and covalent bonding properties with cellulosic fibers, making it a critical component for producing vibrant and wash-fast textile dyes. It is primarily required by manufacturers in the specialty chemicals and textile industries for synthesizing advanced reactive dyes and colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton, viscose, and other cellulosic fiber dyeing and printing.
• Textile Colorant Production: Used in the manufacture of dyes offering excellent wet fastness, brightness, and lightfastness properties.
• Specialty Chemical Synthesis: Serves as a precursor for creating complex chromophores and functional dyes for research and development.
• Industrial Ink Formulation: Potential use in the production of specialized inks requiring strong color value and stability.
• Laboratory Research: Used as a standard or reagent in analytical chemistry and dye research studies.

Basic Information

Item	Details
Product Name	Disodium p-[4,5-Dihydro-5-Imino-4-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	97403-76-4
Molecular Formula	C19H18N5Na2O11S3
Molecular Weight	673.56 g/mol
Synonyms	Disodium 5-imino-4-[(2-methoxy-5-{2-[(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]-3-methyl-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonate; Reactive Dye Intermediate 97403-76-4; Benzenesulfonic acid, 5-imino-4-[[2-methoxy-5-[[2-[(sulfonatooxy)ethyl]sulfonyl]phenyl]azo]-3-methyl-4,5-dihydro-1H-pyrazol-1-yl]-, disodium salt; Azo Pyrazole Dye Intermediate; C.I. Reactive Orange 107 intermediate (related)
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Every lot is tested against rigorous in-house specifications, which typically include identity confirmation, assay (purity), and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (1% 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.