Description

Disodium 2-[3-Nitro-4-[[4-(Phenylamino)-3-Sulphonatophenyl]Amino]Benzoyl]Benzoate is a high-purity, water-soluble organic salt primarily used as a key intermediate in the synthesis of advanced colorants and functional dyes. This compound is valued for its precise molecular structure, which enables the development of dyes with specific chromophoric and auxochromic properties, leading to superior color fastness and application performance. It is an essential raw material for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-quality, consistent pigments and dyes.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of high-performance azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Functional Dye Manufacturing: Used in the production of specialized dyes for inkjet inks, leather coloring, and paper coloration, where water solubility and color purity are paramount.
• Research & Development: Employed in chemical R&D laboratories for developing novel chromophores with tailored light absorption and emission characteristics.
• Specialty Pigment Synthesis: Acts as a precursor in the manufacture of complex organic pigments used in plastics, coatings, and high-end printing applications.

Basic Information

Product Name	Disodium 2-[3-Nitro-4-[[4-(Phenylamino)-3-Sulphonatophenyl]Amino]Benzoyl]Benzoate
CAS No.	70210-38-7
Molecular Formula	C26H17N3Na2O9S
Molecular Weight	593.47 g/mol
Synonyms	Benzoic acid, 2-[3-nitro-4-[[4-(phenylamino)-3-sulfophenyl]amino]benzoyl]-, disodium salt; 2-[3-Nitro-4-({4-[(phenylamino)-3-sulfonato]phenyl}amino)benzoyl]benzoic acid disodium salt; C.I. Acid Yellow 219; Disodium 2-(3-nitro-4-{[4-(phenylamino)-3-sulfonatophenyl]amino}benzoyl)benzoate; Disodium 2-(3-nitro-4-{[4-(phenylamino)-3-sulfophenyl]amino}benzoyl)benzoate
EINECS	Contact for details

Quality Control

Our production of Disodium 2-[3-Nitro-4-[[4-(Phenylamino)-3-Sulphonatophenyl]Amino]Benzoyl]Benzoate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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