Description

Disodium 4,4'-[(1,8-Dihydroxy-9H-Carbazole-2,7-Diyl)Bis(Azo)]Bis(Benzenesulphonate) CAS NO 83803-46-7 is a high-purity, water-soluble azo dye intermediate derived from carbazole. It matters for its role as a critical precursor in synthesizing specialized dyes and pigments, offering excellent color strength and stability. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable intermediates for high-performance colorants.

Application

• Primary Intermediate for Dyes & Pigments: Serves as a key building block for the synthesis of high-value azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Functional Dye Manufacturing: Used in the production of specialized dyes for inkjet inks, laser printing, and other digital imaging applications.
• Research & Development: A valuable compound for R&D laboratories developing new chromophores, photoactive materials, and sensors.
• Analytical Chemistry: Can be employed as a standard or reagent in analytical methods for dye characterization and quality control.
• Specialty Chemical Synthesis: Utilized in the synthesis of complex organic molecules where the carbazole-azo-benzenesulfonate structure is required.

Basic Information

Product Name	Disodium 4,4'-[(1,8-Dihydroxy-9H-Carbazole-2,7-Diyl)Bis(Azo)]Bis(Benzenesulphonate)
CAS No.	83803-46-7
Molecular Formula	C30H18N4Na2O10S2
Molecular Weight	704.59 g/mol
Synonyms	Disodium 4,4'-(1,8-dihydroxy-9H-carbazole-2,7-diyl)bis(diazene-2,1-diyl)dibenzenesulfonate; 2,7-Bis(4-sulfophenylazo)-1,8-dihydroxycarbazole disodium salt; Carbazole-based disazo dye intermediate; CI 51010 (related); Direct Blue 108 (related intermediate); 83803-46-7; Disodium 4,4'-[(1,8-dihydroxycarbazole-2,7-diyl)bis(azo)]bis(benzenesulfonate)
EINECS	Contact for details

Quality Control

Our production of Disodium 4,4'-[(1,8-Dihydroxy-9H-Carbazole-2,7-Diyl)Bis(Azo)]Bis(Benzenesulphonate) adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, and physical properties are provided to guarantee traceability and compliance with your technical requirements.

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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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