Description

Disodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Dibenzoate is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. This compound matters because it offers exceptional consistency and batch-to-batch reliability, which are critical for manufacturers requiring precise color formulation and performance. It is primarily needed by industries involved in the synthesis of dyes and pigments for textiles, inks, and specialty coatings, where quality control is paramount.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloration.
• Key component in manufacturing colorants for inks, including those for packaging and commercial printing.
• Used in the production of specialty dyes for leather and paper products.
• Employed in research and development for novel functional dyes with specific optical properties.
• Potential use as a colorimetric reagent or indicator in analytical chemistry applications.
• Serves as a building block for high-performance pigments used in automotive and industrial coatings.

Basic Information

Product Name	Disodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Dibenzoate
CAS No.	6420-30-0
Molecular Formula	C31H22N6Na2O9
Molecular Weight	668.52 g/mol
Synonyms	Direct Blue 90 (C.I. 34200); Disodium 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis(benzoate); Benzoic acid, 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis-, disodium salt; C.I. Direct Blue 90; Direct Blue 90, disodium salt; Pontamine Blue 3BX; Sirius Supra Blue BRR
EINECS	229-178-2

Quality Control

Our Disodium 3,3'-[Carbonylbis[Imino(3-Methoxy-4,1-Phenylene)Azo]]Dibenzoate 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 exacting specifications for dye intermediate applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to bluish-black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	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.