Description

4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonaphthalene-6,2-Diyl)Azo]]Dibenzoic Acid is a specialized, high-purity azo dye intermediate of significant commercial importance. This compound is valued for its precise molecular structure, which is critical for synthesizing high-performance dyes and pigments with excellent color fastness and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid and durable colorants.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-grade, complex azo dyes for textiles and leather.
• Specialty Ink Formulations: Used in the production of inks requiring specific chromatic properties and lightfastness for packaging and security printing.
• Functional Colorant Synthesis: Employed in research and development of novel colorants for advanced materials and liquid crystal displays (LCDs).
• Analytical Chemistry Reagent: Can be utilized as a chromogenic agent or a standard in analytical methods for dye identification and quantification.

Basic Information

Product Name	4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonaphthalene-6,2-Diyl)Azo]]Dibenzoic Acid
CAS No.	47893-59-4
Molecular Formula	C41H24N6O11S2
Molecular Weight	840.79 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4,4'-[Carbonylbis[imino(1-hydroxy-6-sulfo-2-naphthalene)azo]]dibenzoic acid; Benzoic acid, 4,4'-[carbonylbis[imino(1-hydroxy-6-sulfo-2-naphthalene)azo]]di-; Dibenzoic acid derivative of an azo sulfonated naphthalene dye intermediate.
EINECS	Contact for details

Quality Control

Our production of 4,4'-[Carbonylbis[Imino(1-Hydroxy-3-Sulphonaphthalene-6,2-Diyl)Azo]]Dibenzoic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The material is characterized using advanced analytical techniques including HPLC, FT-IR, 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 and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, containers should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 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.