Description

Disodium 8-[(4-Hydroxyphenyl)Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalenesulphonate is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for producing vivid and stable colorants. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors who require consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance red and orange azo dyes for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for printing inks, including flexographic and gravure inks.
• Specialty Colorants: Employed in the formulation of colorants for plastics, coatings, and other polymeric materials requiring specific hue and stability.
• Research & Development: A valuable compound for chemical research, particularly in developing new chromophores and studying azo coupling reactions.
• Analytical Chemistry: Can be utilized as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	Disodium 8-[(4-Hydroxyphenyl)Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalenesulphonate
CAS No.	85283-57-4
Molecular Formula	C34H22N6Na2O10S2
Molecular Weight	776.73 g/mol
Synonyms	Disodium 8-[(4-hydroxyphenyl)azo]-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]naphthalene-2-sulfonate; C.I. Acid Red 337; Acid Red 337; Azo Dye Intermediate AR337; 8-[(4-Hydroxyphenyl)azo]-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]naphthalene-2-sulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 8-[(4-hydroxyphenyl)azo]-5-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 8-[(4-Hydroxyphenyl)Azo]-5-[[4-[(4-Nitro-2-Sulphonatophenyl)Amino]Phenyl]Azo]Naphthalenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous in-house specifications using advanced techniques like HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and handling properties.

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.