Description

3,5-Dinitro-4-[[4-(Phenylamino)-3-(Sodiosulfo)Phenyl]Amino]Benzoic Acid is a specialized, high-value organic intermediate with a complex aromatic structure. This compound is critical for applications requiring precise chromophoric or ligand properties, offering unique reactivity for advanced synthesis. It is primarily utilized by research institutions and industrial manufacturers in the production of dyes, pigments, and functional materials.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of specialized azo dyes and high-performance pigments for textiles, inks, and coatings.
• Chemical Research & Development: Serves as a valuable building block in organic synthesis for novel compounds with specific optical or electronic properties.
• Functional Material Synthesis: Used in the development of advanced materials, including liquid crystals, optical brighteners, and charge-transfer complexes.
• Analytical Reagent: Potential use as a complexing agent or a chromogenic reagent in specific analytical chemistry methodologies.

Basic Information

Item	Detail
Product Name	3,5-Dinitro-4-[[4-(Phenylamino)-3-(Sodiosulfo)Phenyl]Amino]Benzoic Acid
CAS No.	6373-76-8
Molecular Formula	C19H13N5O9SNa
Molecular Weight	518.39 g/mol
Synonyms	Benzoic acid, 3,5-dinitro-4-[[4-(phenylamino)-3-sulfophenyl]amino]-, sodium salt; 4-[[4-Anilino-3-sulfophenyl]amino]-3,5-dinitrobenzoic acid sodium salt; C.I. 37155; Acid Yellow 121; Sodium 4-((4-anilino-3-sulfophenyl)amino)-3,5-dinitrobenzoate; 3,5-Dinitro-4-((4-(phenylamino)-3-sulfophenyl)amino)benzoic acid sodium salt
EINECS	228-920-7

Quality Control

Our production of 3,5-Dinitro-4-[[4-(Phenylamino)-3-(Sodiosulfo)Phenyl]Amino]Benzoic Acid adheres to stringent internal quality standards to ensure batch-to-batch consistency and reliability. Every lot is characterized by advanced analytical techniques, including HPLC and NMR, to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

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). This material is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 0.5%

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