Description

2,2'-[[4,4'-Bis[[1-Hydroxy-6-[(4-Methoxyphenyl)Amino]-3-Sulpho-2-Naphthyl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetic Acid, Potassium Sodium Salt is a high-purity, water-soluble anionic dye intermediate of significant industrial importance. Its complex polyazo structure provides excellent chromophoric properties, making it a critical precursor for synthesizing high-performance dyes and pigments. This compound is primarily sought by manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton, wool, and nylon fibers, offering bright and wash-fast colors.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, plastics, and industrial coatings, where color strength and stability are paramount.
• Specialty Ink Formulations: Employed in the development of specialty inks, including those for textile printing and security applications, due to its specific spectral properties.
• Research & Development: Serves as a valuable chemical entity in R&D laboratories for developing novel colorants and studying structure-property relationships in dye chemistry.
• Functional Dye Synthesis: Potential use as a precursor for functional dyes used in optical data storage, liquid crystal displays (LCDs), and other advanced material applications.

Basic Information

Item	Detail
Product Name	2,2'-[[4,4'-Bis[[1-Hydroxy-6-[(4-Methoxyphenyl)Amino]-3-Sulpho-2-Naphthyl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetic Acid, Potassium Sodium Salt
CAS No.	97403-88-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(2-carboxymethoxy)-4,4'-bis[[1-hydroxy-6-[(4-methoxyphenyl)amino]-3-sulfo-2-naphthyl]azo]biphenyl-3,3'-diyl diacetate potassium sodium salt; C.I. Reactive Black 5 intermediate; Polyazo dye intermediate; Potassium sodium salt of a biphenyl-based bis-azo dye acid; 3,3'-[Biphenyl-4,4'-diylbis(azo)]bis[1-hydroxy-6-[(4-methoxyphenyl)amino]naphthalene-2,7-disulfonic acid] derivative; Reactive dye precursor; Anionic disazo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 2,2'-[[4,4'-Bis[[1-Hydroxy-6-[(4-Methoxyphenyl)Amino]-3-Sulpho-2-Naphthyl]Azo][1,1'-Biphenyl]-3,3'-Diyl]Bis(Oxy)]Bisacetic Acid, Potassium Sodium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chroma value, and batch-to-batch reproducibility, which are critical for downstream dye synthesis. Certificates of Analysis (COA) detailing purity, impurity profile, and other key parameters 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
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.