Description

7-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,3-Disulphonic 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 binding affinity to substrates. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce vivid and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-performance reactive dyes for cotton, wool, and nylon.
• Acid Dye Production: Used in manufacturing acid dyes for coloring silk, leather, and paper.
• Textile Printing Inks: Serves as a key component in formulating specialty inks for digital and screen printing on fabrics.
• Leather Finishing: Employed in dye baths to achieve deep, uniform colors on leather goods.
• Research & Development: Used in chemical R&D for developing novel chromophores and functional dyes.
• Specialty Chemical Synthesis: Acts as a sulfonated intermediate for further chemical modifications in fine chemical production.

Basic Information

Item	Details
Product Name	7-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,3-Disulphonic Acid, Sodium Salt
CAS No.	94249-19-1
Molecular Formula	C22H19N4O13S3Na
Molecular Weight	690.58 g/mol
Synonyms	Acid Red 337 (sodium salt); Reactive Red 180 intermediate; 7-[(4,5-Dihydro-3-methyl-5-oxo-1-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-1H-pyrazol-4-yl)azo]naphthalene-1,3-disulfonic acid sodium salt; C.I. 18129; Sodium 1,3-dihydroxy-7-[[1-[4-[(2-sulfatoethyl)sulfonyl]phenyl]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl]azo]naphthalene-3,6-disulfonate; Azo dye intermediate 94249-19-1; 1,3-Naphthalenedisulfonic acid, 7-[[4,5-dihydro-3-methyl-5-oxo-1-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]-1H-pyrazol-4-yl]azo]-, sodium salt
EINECS	Contact for details

Quality Control

Our production of 7-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]Naphthalene-1,3-Disulphonic Acid, Sodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed against comprehensive specifications, including HPLC assay for purity and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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