Description

Sodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex, multi-azo structure provides excellent chromophoric properties, making it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid, stable colors with specific performance characteristics.

Application

• Textile Dye Synthesis: A key intermediate for producing high-performance, wash-fast azo dyes for synthetic and natural fibers.
• Inkjet and Printing Inks: Used in the manufacture of advanced colorants for high-resolution digital and industrial printing applications.
• Industrial Pigments: Serves as a precursor for creating organic pigments used in plastics, paints, and specialty coatings.
• Research & Development: Employed in chemical research for developing novel chromophores and studying azo dye chemistry and photostability.
• Functional Dyes: Potential use in the synthesis of dyes for non-textile applications, such as in optical data storage or liquid crystal displays (LCDs).

Basic Information

Product Name	Sodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	93982-79-7
Molecular Formula	C41H28N4Na2O10S3
Molecular Weight	894.84 g/mol
Synonyms	Acid Red 337 (Sodium Salt); C.I. 17200; Sodium 4-Hydroxy-3-[[4'-[[4-(Phenylsulfonyloxy)phenyl]azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonate; 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulfonyl)oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxy-2,7-naphthalenedisulfonic Acid Disodium Salt; Azo Dye Intermediate 93982-79-7; Disodium 4-hydroxy-3-[(E)-[4-[(E)-[4-[4-(phenylsulfonyloxy)phenyl]diazenyl]-2,2-dimethylbiphenyl-4-yl]diazenyl]naphthalene-2,7-disulfonate
EINECS	Contact for details

Quality Control

Our production of Sodium 3-[[2,2'-Dimethyl-4'-[[4-[(Phenylsulphonyl)Oxy]Phenyl]Azo][1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and compliance with your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. For long-term storage, consider an inert atmosphere to maintain product integrity.

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.