Description

Disodium 4-Hydroxy-3-[[4'-[(4-Hydroxyphenyl)Azo]-2,2'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vivid and stable coloration, making it a critical component in the synthesis of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and performance for their high-value products.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textiles and leather.
• Specialty Ink Formulation: Used in the production of inks for jet printing, packaging, and security applications requiring specific color fastness.
• Industrial Pigments: Employed in the manufacture of pigments for plastics, paints, and coatings where color stability is paramount.
• Research & Development: Utilized in chemical research for developing new chromophores and studying dye-sensitized systems.
• Analytical Reagents: Can be used as a colorimetric indicator or tracer in specific laboratory and analytical procedures.

Basic Information

Product Name	Disodium 4-Hydroxy-3-[[4'-[(4-Hydroxyphenyl)Azo]-2,2'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	93918-04-8
Molecular Formula	C36H26N4Na2O8S2
Molecular Weight	744.70 g/mol
Synonyms	Direct Red 243; C.I. 29160; Disodium 4-hydroxy-3-[(E)-2-[4-[(E)-2-(4-hydroxyphenyl)diazen-1-yl]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]diazen-1-yl]naphthalene-2,7-disulfonate; 4-Hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt; Azo Dye Intermediate 93918-04-8; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxy-3-[[4'-[(4-Hydroxyphenyl)Azo]-2,2'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is 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). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed after opening to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, complete solution

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