20246-81-5

Basic information

• Product Name: 4,4'-Dinitrodiphenic acid
• Synonyms: 4,4'-Dinitrodiphenic acid;4,4'-Dinitro-1,1'-biphenyl-2,2'-dicarboxylic acid;4,4'-Dinitro-2,2'-biphenyldicarboxylic acid;4,4'-Dinitro-2,2'-diphenic acid;[1,1'-Biphenyl]-2,2'-dicarboxylicacid, 4,4'-dinitro-
• CAS NO: 20246-81-5
• Molecular Formula: C₁₄H₈N₂O₈
• Molecular Weight: 332.22
• Mol File: 20246-81-5.mol
• Article Data: 14

Chemical Properties

• Melting Point: 258-259℃
• Boiling Point: 539.5°Cat760mmHg
• Flash Point: 225.2°C
• Appearance: /
• Density: 1.632
• Storage Temp.: Sealed in dry,Room Temperature
• PKA: 2.61±0.22(Predicted)
• CAS DataBase Reference: 4,4'-Dinitrodiphenic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-Dinitrodiphenic acid(20246-81-5)
• EPA Substance Registry System: 4,4'-Dinitrodiphenic acid(20246-81-5)

Safety Data

• Hazardous Substances Data: 20246-81-5(Hazardous Substances Data)

Usage

General Description

4,4'-Dinitrodiphenic acid is a chemical compound that is derived from the reaction of nitric acid and dichlorobenzene. It is a yellow crystalline solid that is commonly used in the production of dyes, pigments, and pharmaceuticals. 4,4'-Dinitrodiphenic acid is known for its strong acidic properties and is often utilized as an intermediate in the synthesis of various organic compounds. Its aromatic structure and nitro groups make it useful in the development of highly functionalized molecules for use in a range of applications. Additionally, 4,4'-Dinitrodiphenic acid is also used in the manufacturing of explosives and has been studied for its potential as a corrosion inhibitor.

Upstream product

• 2516-96-3 2-chloro-5-nitrobenzoic acid 
• 26513-20-2 N,N-diethyl-1,3-benzenediamine 
• 604-94-4 2,7-dinitro-phenanthrene-9,10-dione 
• 7664-93-9 sulfuric acid 
• 1210-05-5 Biphenyl-2,2'-dicarbaldehyde 
• 85-01-8 phenanthrene 
• 121-92-6 3-nitrobenzoic acid 
• 943-14-6 2-bromo-5-nitrobenzoic acid 
• 863305-32-2 diphenic acid 
• 62245-44-7 2,2'-diformyl-4,4'-dinitrobiphenyl 
• 23305-76-2 dimethyl 4,4’-dinitro-2,2’-biphenyldicarboxylate 
• 90-14-2 1-Iodonaphthalene 
• 112239-00-6 methyl 2-iodo-5-nitrobenzoate 
• 6942-36-5 methyl 2-bromo-5-nitrobenzoate 

Downstream Products

• 62925-34-2 2,7-dinitro-5,10-dioxo-4,5,9,10-tetrahydro-4,9-dioxapyrene 
• 5047-02-9 4,4’-dinitro-1,1‘-biphenyl-2,2’-dimethanol 
• 351195-57-8 bis{ω-[4-(4-cyanophenyl)phenoxy]hexyl} 4,4'-diamino-biphenyl-2,2'-dicarboxylate 
• 710327-95-0 [4,4'-dinitro-2'-(1,4,7,10,13-pentaoxa-16-aza-cyclooctadecane-16-carbonyl)-biphenyl-2-yl]-(1,4,7,10,13-pentaoxa-16-aza-cyclooctadec-16-yl)-methanone 
• 149935-34-2 dimethyl 4,4’-diamino-2,2’-biphenyldicarboxylate 
• 922139-70-6 4,4'-diiodo-(N',N'''-dibenzoyl)diphenic acid dihydrazide 
• 922139-59-1 4,4'-diiodo-2,2'-bis[5-phenyl-(1,3,4)-oxadiazol-2-yl]biphenyl 
• 351195-58-9 bis{ω-[4-(4-cyanophenyl)phenoxy]hexyl}4,4'-dinitro-biphenyl-2,2'-dicarboxylate 
• 17557-76-5 4,4'-diamino-[1,1'-biphenyl]-2,2'-dicarboxylic acid 
• 27007-55-2 4,4'-dinitro-2,2'-diphenic acid anhydride 
• 1528-74-1 4,4'-dinitrobiphenyl 

Relevant articles and documents

Preparation, Characterization, and Molecular Structure of Two New Heat-Resistant Energetic Compounds

In this paper, nitration of 2,2'-diphenic acid was studied and two aromatic carboxylic acids containing two and four nitro groups, respectively, were synthesized and characterized through elemental analysis, IR spectra, respectively. Crystal structure of 4,4'-dinitro-2,2'-diphenic acid and 4,4',6,6'-tetranitro-2,2'-diphenic acid was determined by X-ray single crystal diffraction and their thermal decomposition have been carried out through differential scanning calorimeter analyses at a heating rate of 10°C/min. The results indicate that the compounds have high heat-resistant stability.

Absolute Configuration Assignment from Optical Rotation Data by Means of Biphenyl Chiroptical Probes

A non-empirical approach for the assignment of the absolute configuration of chiral 2-alkyl-substituted carboxylic acids and primary amines by [α]D measurements has been developed. The method requires the conversion of the chiral acids or amines into the corresponding 4,4′-disubstituted biphenylamides or biphenylazepines, respectively. In these derivatives a central-to-axial chirality transfer induces a preferred torsion in the biphenyl moiety revealed by the sign of the biphenyl A band in the ECD spectrum. By 4,4′-substitution on the biphenyl moiety a redshift of the A band is obtained, leading to an increase of its relative contribution to optical rotation. This allows to reliably establish a direct correlation between the [α]D sign, the biphenyl twist and, then, the substrate absolute configuration. This approach thus constitutes a really practical and reliable method to assign the absolute configuration of chiral carboxylic acids and primary amines by simple and straightforward [α]D measurement, readily obtainable by a routine instrumentation like the polarimeter.

PHOTOALIGNING MATERIALS

The present invention relates to polymer, homo- or copolymer or oligomer, which, when irradiated with polarised light orients perpendicular to the polarization direction of polarized actinic light, for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer (I), compositions thereof, and its use for optical and electro optical devices, such as, liquid crystal devices (LCDs), especially for planar orientation of liquid crystals.