Description

Disodium 2,5-Dichloro-4-[4-[[5-[[(Dodecyloxy)Carbonyl]Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing specialized dyes and pigments, offering excellent color properties and stability. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-performance reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for industrial inks, including packaging and textile printing inks.
• Functional Dye Synthesis: Serves as a precursor for dyes used in technical applications, such as laser marking and optical data storage.
• Textile Colorant Production: Essential for manufacturing dyes that provide bright shades with good wash and light fastness properties.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry.

Basic Information

Product Name	Disodium 2,5-Dichloro-4-[4-[[5-[[(Dodecyloxy)Carbonyl]Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	71873-51-3
Molecular Formula	C30H30Cl2N5Na2O10S2
Molecular Weight	810.58 g/mol
Synonyms	Disodium 2,5-dichloro-4-[4-[[5-[[(dodecyloxy)carbonyl]amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonate; C.I. Reactive Yellow 145 intermediate; Azo pyrazolone dye intermediate; 71873-51-3; Benzenesulfonic acid, 2,5-dichloro-4-[4-[[5-[[(dodecyloxy)carbonyl]amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 2,5-Dichloro-4-[4-[[5-[[(Dodecyloxy)Carbonyl]Amino]-2-Sulphonatophenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a dye intermediate. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles 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). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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