Description

4,4'-Dinitrodiphenic Acid is a high-purity aromatic nitro compound, serving as a critical intermediate in advanced organic synthesis. Its value lies in its bifunctional structure, which provides two reactive nitro groups for subsequent reduction to diamines or for use in condensation polymerizations. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries who require a reliable and consistent building block for complex molecule creation.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a rigid biphenyl core.
• Agrochemical Synthesis: Used in the development of herbicides and pesticides where the dinitro functionality is integral to biological activity.
• Polymer Chemistry: Serves as a monomer or co-monomer in the production of high-performance polyamides, polyimides, and other engineering plastics.
• Dye and Pigment Manufacturing: Intermediate for azo dyes and other complex colorants, leveraging the nitro groups for chromophore development.
• Ligand Synthesis: Useful for preparing chelating ligands in coordination chemistry and catalysis research.
• Cross-linking Agent: Potential use in creating cross-linked polymer networks for resins and coatings.

Basic Information

Product Name	4,4'-Dinitrodiphenic Acid
CAS No.	20246-81-5
Molecular Formula	C14H10N2O8
Molecular Weight	334.24 g/mol
Synonyms	[4,4'-Dinitro-[1,1'-biphenyl]-2,2'-dicarboxylic acid; 2,2'-Biphenyldicarboxylic acid, 4,4'-dinitro-; 4,4'-Dinitrobiphenyl-2,2'-dicarboxylic acid; DNPA; Dinitrodiphenic acid]
EINECS	Contact for details

Quality Control

Our 4,4'-Dinitrodiphenic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

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

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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