Description

Benzoic Acid, 3,3'-[Thiobis(2,1-Phenyleneazo)]Bis[6-Hydroxy- is a specialized azo dye intermediate characterized by its distinct molecular structure incorporating sulfur and azo linkages. This compound is valued for its role in synthesizing high-performance pigments and dyes, offering excellent color properties and stability. It is primarily sought by manufacturers in the pigments, dyes, and specialty chemical industries for producing colorants used in inks, coatings, and plastics.

Application

• Primary Intermediate for Azo Pigments: Serves as a key building block in the synthesis of high-performance yellow, orange, and red organic pigments.
• Industrial Coatings and Inks: Used to manufacture colorants for automotive paints, industrial coatings, and printing inks requiring lightfastness and chemical resistance.
• Plastics and Polymer Coloring: Incorporated into masterbatches for coloring engineering plastics and synthetic fibers.
• Specialty Dyes: Potential use in the production of dyes for textiles and other substrates where specific chromophoric properties are needed.
• Research & Development: Utilized in chemical research for developing novel chromophores and functional materials.

Basic Information

Product Name	Benzoic Acid, 3,3'-[Thiobis(2,1-Phenyleneazo)]Bis[6-Hydroxy-
CAS No.	72245-48-8
Molecular Formula	C26H18N4O4S
Molecular Weight	482.51 g/mol
Synonyms	3,3'-[Thiobis(2,1-phenyleneazo)]bis[6-hydroxybenzoic acid]; Bis(6-hydroxy-3-[(2-aminophenyl)azo]benzoic acid) sulfide; Azo dye intermediate 72245-48-8; Thio-bis-phenylene azo bis-hydroxybenzoic acid; Benzoic acid, 6-hydroxy-3-[(2-aminophenyl)azo]-, sulfide; CI 12715 (related class)
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Quality is verified through analytical techniques including HPLC, IR spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance processes.

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). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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