Description

Disodium (3Z)-5-methyl-3-[[2-methyl-4-[3-methyl-4-[[3-methyl-5-oxo-1-(4-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]phenyl]phenyl]hydrazinylidene]-6-oxo-cyclohexa-1,4-diene-1-carboxylate is a high-purity, water-soluble azo dye intermediate with excellent colorant properties. It is a critical component for synthesizing vibrant and stable dyes and pigments, offering superior performance in demanding applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent raw materials for their production processes.

Application

• Textile Dyeing: A key intermediate for producing high-quality, wash-fast azo dyes for natural and synthetic fibers.
• Ink Manufacturing: Used in the formulation of printing inks, including those for packaging, publications, and security printing, due to its color strength.
• Pigment Synthesis: Serves as a precursor for organic pigments used in plastics, paints, and industrial coatings.
• Leather Coloring: Employed in the production of dyes for the uniform and durable coloring of leather goods.
• Paper Coloring: Utilized in the manufacture of dyes for specialty papers and paper products requiring specific hues.
• Research & Development: Acts as a standard or building block in chemical research for developing new colorants and functional materials.

Basic Information

Product Name	Disodium (3Z)-5-methyl-3-[[2-methyl-4-[3-methyl-4-[[3-methyl-5-oxo-1-(4-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]phenyl]phenyl]hydrazinylidene]-6-oxo-cyclohexa-1,4-diene-1-carboxylate
CAS No.	6420-04-8
Molecular Formula	C32H26N6Na2O8S
Molecular Weight	708.63 g/mol
Synonyms	Acid Red 337; C.I. 17200; Disodium 5-methyl-3-((2-methyl-4-((3-methyl-4-((3-methyl-5-oxo-1-(4-sulfonatophenyl)-1H-pyrazol-4-yl)diazenyl)phenyl)hydrazono)-6-oxocyclohexa-1,4-dien-1-yl)carboxylate; 6420-04-8; Azo dye intermediate; Acid Dye Red 337; C.I. Acid Red 337; Reactive dye precursor
EINECS	Contact for details

Quality Control

Our disodium azo dye intermediate is manufactured under strict quality protocols to ensure batch-to-batch consistency and high purity. We adhere to relevant industry standards, and each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, impurity profile, and color strength. Certificates are available upon request to support your quality assurance and regulatory compliance 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). This product is hygroscopic (moisture-sensitive); therefore, 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%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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