Description

Disodium 4,5-Dichloro-2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(3-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate 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 direct dyes, offering excellent color strength and stability in the final product. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable and consistent raw materials for their colorant production.

Application

• Primary Intermediate for Reactive Dyes: A crucial building block in the synthesis of high-performance reactive dyes used for coloring cotton, viscose, and other cellulosic fibers.
• Manufacture of Direct Dyes: Used in the production of direct dyes for paper, leather, and textile applications requiring good wet fastness.
• Specialty Ink Formulations: Serves as a colorant precursor in the manufacturing of inks for jet printing and other specialty printing applications.
• Functional Dye Synthesis: Employed in research and development for creating functional dyes used in sensors, optical data storage, and other advanced materials.
• Laboratory Reagent: Used as a standard or reagent in analytical and research laboratories focusing on dye chemistry and photophysical studies.

Basic Information

Product Name	Disodium 4,5-Dichloro-2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(3-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate
CAS No.	65212-76-2
Molecular Formula	C22H14Cl2N4Na2O8S2
Molecular Weight	659.38 g/mol
Synonyms	Disodium 4,5-dichloro-2-[(4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)diazenyl]benzenesulfonate; C.I. Reactive Orange 13 intermediate; 1,3-Benzenedisulfonic acid, 4,5-dichloro-2-[(4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo]-, disodium salt; Reactive Orange 13 precursor; Azo pyrazolone dye intermediate; Disodium salt of a dichloro azo benzenesulfonate dye
EINECS	Contact for details

Quality Control

Our production of Disodium 4,5-Dichloro-2-[[4,5-Dihydro-3-Methyl-5-Oxo-1-(3-Sulphonatophenyl)-1H-Pyrazol-4-Yl]Azo]Benzenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) documenting identity, purity, and related substances are provided with each shipment.

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 material is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed when not in use to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Complete, 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.