Description

Tetrasodium 4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonatonaphthalene-6,2-Diyl)Azo]]Dibenzoate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color fastness and stability. It is primarily required by manufacturers in the textile, leather, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Key intermediate for the synthesis of reactive and direct dyes used in textile dyeing and printing.
• Manufacture of pigments and colorants for industrial paints, inks, and coatings.
• Production of dyes for leather finishing applications.
• Used in research and development of novel chromophores and specialty dyes.
• Potential component in the formulation of analytical reagents and biological stains.
• Intermediate for colorants used in paper and pulp processing.

Basic Information

Product Name	Tetrasodium 4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonatonaphthalene-6,2-Diyl)Azo]]Dibenzoate
CAS No.	65072-31-3
Molecular Formula	C45H24N6Na4O15S2
Molecular Weight	1030.8 g/mol
Synonyms	Acid Blue 193 (Tetrasodium Salt); C.I. 15707; Tetrasodium 6,6'-((Carbonyldiimino)bis(1-hydroxy-6-sulphonato-2-naphthalenediazo))bis(4-aminobenzoate); Benzoic acid, 4,4'-[carbonylbis[imino(1-hydroxy-3-sulphonato-6,2-naphthalenediyl)azo]]di-, tetrasodium salt; Direct Blue 86 (related compound); Azo Dye Intermediate 65072-31-3
EINECS	Contact for details

Quality Control

Our Tetrasodium 4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonatonaphthalene-6,2-Diyl)Azo]]Dibenzoate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry specifications. Certificates of Analysis (COA) detailing batch-specific results 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
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 solution

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