Category: 1821-27-8

Gaboriaud, R. published the artcileDetermination of the pKa of very weak acids by extrapolation methods in water-dimethyl sulfoxide media, SDS of cas: 1821-27-8, the publication is Bulletin de la Societe Chimique de France (1976), 1093-8, database is CAplus.

The empirical function pK(AH)-pK(reference) = ¦Á + ¦Âg(S) for solvent blends introduced earlier (1973), was applied to indole, Ph2NH, PhNH2, and aminopyridine derivatives dissolved in aqueous DMSO. The linear correlation readily permits an extrapolation to calculate pK values at 20¡ã for solutions in pure H2O (g(S)). The pK values correspond well with values determined in concentrated LiOH, NaOH, and KOH solutions

Bulletin de la Societe Chimique de France published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, SDS of cas: 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Burleson, Garrett Lee published the artcileForensic analysis of a single particle of partially burnt gunpowder by solid phase micro-extraction-gas chromatography-nitrogen phosphorus detector, SDS of cas: 1821-27-8, the publication is Journal of Chromatography A (2009), 1216(22), 4679-4683, database is CAplus and MEDLINE.

Solid phase micro-extraction (SPME) was adopted to extract organic gun shot residues (OGSRs) from a single particle of partially burnt gunpowder. The partially burnt particle samples were collected from gun shot residue (GSR) deposited near the target areas. OGSRs, such as diphenylamine (DPA), methyl centralite (MC), Et centralite (EC), from only one single particle of partially burnt gunpowder were successfully extracted by SPME and analyzed by a gas chromatog. coupled to a nitrogen phosphorus detector (GC-NPD). The results confirmed that the new extraction procedure is capable of extracting trace amount of MC and EC as signature mols. for the identification of GSR. The method represents a solvent-free extraction as a complementary anal. procedure for the forensic anal. of GSR-related evidences. The new extraction scheme with the capability of analyzing single particle of partially burnt gunpowder can also be applied to the identification of explosive residues, such as in post-blast investigations of improvised explosive devices.

Journal of Chromatography A published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, SDS of cas: 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Brisset, Jean L. published the artcileAcidity-basicity in water-pyridine mixed solvents, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Journal de Chimie Physique et de Physico-Chimie Biologique (1971), 68(10), 1506-18, database is CAplus.

Water-pyridine mixtures were examined electrochem. in the range of ¡Ü97.6 weight % amine; this allows the determination of the ion product and provides data concerning the alkalinity levels. The ion product range of these mixtures is more differentiated than that of the previously investigated aqueous amine solutions, thus permitting the electrochem. study of several selected buffers which have been used to measure the acidity constants of nitro-substituted phenols, anilines, diphenylamines, and indazoles.

Journal de Chimie Physique et de Physico-Chimie Biologique published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Recommanded Product: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Fillaux, Odile published the artcileAcidity in water-isopropyl alcohol mixtures, Product Details of C12H9N3O4, the publication is Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques (1966), 263(17), 989-92, database is CAplus.

The use of a cell with junctions and H electrodes allows a determination of the pH in H2O-iso-PrOH mixtures The variation of pK of acids and bases in the above mixtures can be interpreted by taking into account the solvent effect of iso-PrOH.

Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Product Details of C12H9N3O4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Halle, Jean C. published the artcilePreparation of buffer mixtures in DMSO-water mixtures. Application to the study of nitrodiphenylamines, Safety of Bis(4-nitrophenyl)amine, the publication is Bulletin de la Societe Chimique de France (1970), 2047-53, database is CAplus.

From a study of different buffer solutions in H2O-dimethyl sulfoxide (DMSO) mixtures a selection of 14 acids was made corresponding to regularly spaced acidities and covering a large part of the usual acid-base range. These acids belong to 3 different families: carboxylic acids, phenols, and indoles. By using these buffer solutions in H2O-DMSO mixtures, the ionization of several nitrodiphenylamines was established spectrophotometrically. The relative acidity of these indicators varies largely with the composition of the solvent mixture In addition, DMSO enhances strongly the acidity of some derivatives such as 2,4,6-trinitrodiphenylamine.

Bulletin de la Societe Chimique de France published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Safety of Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Lelievre, Jacques published the artcileComparison of various weak polynitro acids, uncharged or anionic, in water-methanol and water-isopropanol mixtures, Quality Control of 1821-27-8, the publication is Journal de Chimie Physique et de Physico-Chimie Biologique (1970), 67(5), 917-25, database is CAplus.

The pKa of uncharged acids derived from indazole and diphenylamine and also of various anionic acids derived from this amine by fixation of a -CO2- or a -SO3- groups in various positions were determined in a continuous series of water-methanol and water-2-propanol mixtures The influence of the ionic strength on the behavior of the latter compounds is the same as expected by the classical electrostatic theory. But the decrease of the dielec. constant, linked to the insertion of organic solvents, is not expressed by a bigger decrease of their thermodynamic pKa than that of the corresponding uncharged acids. On the contrary, with the isopropanol, the meta and para charged acids have a very important maximum of acidity.

Journal de Chimie Physique et de Physico-Chimie Biologique published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Chiarotti, M. published the artcileThin-layer and high-performance liquid chromatographic analyses of organic gunshot residues, Quality Control of 1821-27-8, the publication is Nippon Hoigaku Zasshi (1987), 41(2), 65-70, database is CAplus and MEDLINE.

TLC, normal HPLC, and reversed-phase HPLC were investigated for identification of organic unburnt gunshot residues. Reversed-phase HPLC shows high sensitivity (1-6 ng) for diphenylamine and nitroglycerin (UV detection 280 nm), and it is proposed as a promising tool in forensic studies. Exptl. conditions are given in extensive details.

Nippon Hoigaku Zasshi published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Bakherad, Mohammad published the artcileMetal-free green synthesis of aryl amines in magnetized distilled water: experimental aspects and molecular dynamics simulation, Computed Properties of 1821-27-8, the publication is Green Chemistry, database is CAplus.

A simple, green, and transition metal-free approach to the N-arylation of secondary amines with aryl halides in magnetized distilled water (MDW), as a solvent was introduced. This method offered the advantages of short reaction times, low costs, and an additive-free process, and it also enabled new planning strategies for the construction of aryl amine-containing pharmacophores. Also, the reaction rates were followed spectrophotometrically by monitoring the changes in the absorption spectrum of the reaction mixture in ordinary and magnetized distilled water. Furthermore, the reliable mol. dynamics (MD) simulations were used as predictive tools to interpret and describe the interactions between reactants in the ordinary and magnetized distilled water. The RDFs anal. of interactions revealed that morpholine and iodobenzene reactants were surrounded by more solvents in MDW than ordinary distilled water (ODW) 90¡ãC. Consequently, the high reactivity observed for two reactants in MDW at 90¡ãC can be explained by MD simulation, and there comes an established synergy between the theor. calculation and experiment

Green Chemistry published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Computed Properties of 1821-27-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Shimizu, Daiki published the artcileNucleophilic Aromatic Substitution Reactions of meso-Bromosubporphyrin: Synthesis of a Thiopyrane-Fused Subporphyrin, Product Details of C12H9N3O4, the publication is Chemistry – A European Journal (2014), 20(49), 16194-16202, database is CAplus and MEDLINE.

Meso-Bromosubporphyrin undergoes nucleophilic aromatic substitution (S_NAr) reactions with arylamines, diarylamines, phenols, EtOH, thiophenols, and n-butanethiol in the presence of suitable bases to provide the corresponding substitution products. The S_NAr reactions also proceed well with pyrrole, indole, and carbazole to provide substitution products in moderate to good yields. Finally, the S_NAr reaction with 2-bromothiophenol and subsequent intramol. peripheral arylation reaction affords a thiopyrane-fused subporphyrin.

Chemistry – A European Journal published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C30H32ClN7O2, Product Details of C12H9N3O4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mathis, John A. published the artcileGradient reversed-phase liquid chromatographic-electrospray ionization mass spectrometric method for the comparison of smokeless powders, Name: Bis(4-nitrophenyl)amine, the publication is Journal of Chromatography, A (2003), 988(1), 107-116, database is CAplus and MEDLINE.

A gradient reversed-phase liquid chromatog.-electrospray ionization mass spectrometric (LC-ESIMS) method was developed to determine compositional variation in the organic additives of smokeless powders. The method was optimized for the separation and detection of selected powder constituents, including diphenylamine, along with isomers of its nitroso and nitro derivatives, centralite I and II, in addition to dialkylphthalate acid esters. Com. available smokeless powders were prepared by organic liquid extraction and characterized using the LC-ESIMS method. The results demonstrate the differentiation of smokeless powders by their additive profile.

Journal of Chromatography, A published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Name: Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia