Category: 1821-27-8

Peters, Arnold T. published the artcileElectron impact-induced fragmentation of nitrodiarylamine disperse dyes, Application In Synthesis of 1821-27-8, the publication is Journal of the Society of Dyers and Colourists (1973), 89(11), 385-8, database is CAplus.

Determination of the principal fragment ions and their relative abundance in the mass spectra of nitrodiphenylamines (I), dinitrodiphenylamines (II), and (nitroanilino)- (III) and anilinonitropyridines (IV) indicated that mol. ions of 2-nitrodiarylamines are more stable than those of 4-nitrodiarylamines. Fragmentation of the NO2 group in 4-nitrodiarylamines occurs more readily, and this more facile fragmentation may be related to the lower photochem. stability of these dyes. The presence of a heterocyclic N atom in the dyes facilitates NO2 group fragmentation.

Journal of the Society of Dyers and Colourists 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, Application In Synthesis of 1821-27-8.

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

Raftery, Monica M. published the artcileExplosibility tests for industrial dusts, Related Products of catalysis-chemistry, the publication is Fire Research Technical Paper (United Kingdom, Joint Fire Research Organization) (1975), 14 pp., database is CAplus.

Apparatus and procedures used for testing explosibility of industrial dust suspensions by the Fire Research Station are described. The min. ignition temperature, explosible concentration, and ignition energy and maximum explosion pressure, rate of pressure rise, and O concentration to prevent ignition are tabulated for 290 common industrial dusts, including metals, coal, foods, grain, paper, wood, rubbers, and plastics.

Fire Research Technical Paper (United Kingdom, Joint Fire Research Organization) 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, Related Products of catalysis-chemistry.

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

Ripper, Erwin published the artcileInvestigation of propellants, Name: Bis(4-nitrophenyl)amine, the publication is Explosivstoffe (1967), 15(3), 57-64, database is CAplus.

Thin-layer chromatog. is applied to ascertain changes in composition of explosive stabilizers such as Ph2NH occurring during storage. Ph2NH can undergo nitration, the NO2 groups coming from the slow decomposition of explosives, such as nitroglycerine (I) and (or) nitrocellulose. The explosive is chromatographed on a SiO2 gel column followed by elution with a 5:3:2 by volume mixture of C6H6, CCl4, and 1,2-dichloroethane. The Rf values of many NO2 derivatives of Ph2NH are given. Identification of the eluted compounds can be accomplished by color, reaction with color-producing reagents, and by characteristics fluorescence in uv light. It is also possible to extract selectively from the explosive the Ph2NH derivatives only by using CH2Cl2 as solvent. Thin-layer chromatog. can be successfully used to determine the presence of other explosive-powder stabilizers, such as Akardit I and II, Centralite I and II, and Et phenylurethane. In such analysis, a 30:70 mixture of iso-Pr2O and petroleum ether is used as eluant. The same solvents must be used to detect dinitrotoluene (II) in the presence of I and Ph2NH. During elution with the above solvent mixture, I hardly moves, in contrast to Ph2NH and II. Intensive decomposition of a stabilizer can originate from poor compatability between the explosive and the storage material. Also for such cases, thin-layer chromatog. is applicable. The chromatog. method can be extended for obtaining quant. results through reference curves shown in the original and obtained by plotting extinctions vs. concentrations of substances such as Ph2NH and its derivatives 26 references.

Explosivstoffe 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

Keshavarz, Mohammad Hossein published the artcilePrediction of the condensed phase heat of formation of energetic compounds, Computed Properties of 1821-27-8, the publication is Journal of Hazardous Materials (2011), 190(1-3), 330-344, database is CAplus and MEDLINE.

A new reliable simple model is presented for estimating the condensed phase heat of formation of important classes of energetic compounds including polynitro arene, polynitro heteroarene, acyclic and cyclic nitramine, nitrate ester and nitroaliph. compounds For CHNO energetic compounds, elemental compositions as well as increasing and decreasing energy content parameters are used in the new method. The novel correlation is tested for 192 organic compounds containing complex mol. structures with at least one nitro, nitramine or nitrate energetic functional groups. This work improves the predictive ability of previous empirical correlations for a wide range of energetic compounds For those energetic compounds where group additivity method can be applied and outputs of quantum mech. computations were available, it is shown that the root mean square (rms) deviation of the new method is lower.

Journal of Hazardous Materials 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

Lazzus, Juan A. published the artcileHybrid Method to Predict Melting Points of Organic Compounds Using Group Contribution + Neural Network + Particle Swarm Algorithm, Safety of Bis(4-nitrophenyl)amine, the publication is Industrial & Engineering Chemistry Research (2009), 48(18), 8760-8766, database is CAplus.

The m.ps. of organic compounds were estimated using a hybrid method that includes a simple group contribution method (GCM) implemented in an artificial neural network (ANN) replacing standard back-propagation with particle swarm optimization (PSO). A total of 439 compounds were used to train the network developed using MatLab. Then, the m.ps. of 100 other compounds were predicted and results compared to exptl. data and other models available in the literature. The study shows that the proposed GCM + ANN + PSO model represents an excellent alternative for the estimation of m.ps. of organic compounds (average absolute relative deviation (AARD) = 7%) from the knowledge of the mol. structure.

Industrial & Engineering Chemistry Research 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

Lopatin, B. V. published the artcileVibrational interaction of atomic groups in molecules of nitroaromatic compounds, Synthetic Route of 1821-27-8, the publication is Zhurnal Prikladnoi Spektroskopii (1985), 43(4), 616-20, database is CAplus.

The IR and Raman spectra of 4-O₂NC₆H₄XC₆H₄NO₂-4 (X = a bond, NH, C:C, trans-CH:CH, CH₂, O, S, Se, SS, CH₂CH₂), p-dinitrobenzene (I), and other dinitro compounds were analyzed. The unusually large vibrational interaction of the NO₂ groups in I and certain other compounds was discussed.

Zhurnal Prikladnoi Spektroskopii 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, Synthetic Route of 1821-27-8.

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

Mathieu, Didier published the artcilePower Law Expressions for Predicting Lower and Upper Flammability Limit Temperatures, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Industrial & Engineering Chemistry Research (2013), 52(26), 9317-9322, database is CAplus.

By analogy with recent models for flash point, the lower and upper flammability limit temperatures of organic compounds are represented as power law expressions in terms of fragment contributions. The predictive value of the resulting models compares well with recently published methods. A major advantage of the present approach is the fact it provides better insight into the relations between flammability limit temperatures and mol. structure.

Industrial & Engineering Chemistry Research 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

Gaboriaud, Rene published the artcileAcidity constants of water-amine and water-acetic acid mixtures, Related Products of catalysis-chemistry, the publication is Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques (1967), 264(11), 934-7, database is CAplus.

The ionization curves of indicators in these media are very deformed due to ionic interactions and intervention of solvent ions. The corresponding ionization constants can be calculated and related to the acidity functions. The dielec. constant of the medium does not affect the standard chem. potential of the ions.

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, Related Products of catalysis-chemistry.

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

Gorvin, John H. published the artcileThe synthesis of di- and triarylamines through halogen displacement by base-activated arylamines: comparison with the Ullmann condensation, Category: catalysis-chemistry, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1988), 1331-5, database is CAplus.

Diarylamines, e.g. RC₆H₄NHC₆H₄R¹ (I; R = 2-, 4-NO₂, 2-, 4-cyano; R¹ = 2-, 4-NO₂, 2-, 4-cyano), were prepared by nucleophilic substitution of R¹C₆H₄F by RC₆H₄NH₂ (II) in the presence of Me₃COK in Me₂SO at room temperature Triarylamines, e.g. RC₆H₄N(C₆H₄R¹)(C₆H₄R²), (R = 2-, 4-NO₂, 4-cyano; R¹ = 2-, 4-NO₂, 4-cyano; R² = 2-, 4-NO₂, 4-cyano) were similarly prepared from I and R²C₆H₄F at 125-150¡ã. Certain aryl chlorides, e.g. R¹C₆H₄Cl (R¹ = 2-, 4-NO₂), underwent nucleophilic substitution with II (R = 2-, 4-NO₂) in the presence of Cs₂CO₃ to give 66-90% I. It was confirmed that alkali metal carbonates play only an auxiliary role in the Ullmann (copper-assisted) diarylamine synthesis conducted in dipolar aprotic solvents.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) 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, Category: catalysis-chemistry.

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

Grindlay, J. W. published the artcileSpecial applications of thin-layer chromatography in the identification of diphenylamine derivatives, Recommanded Product: Bis(4-nitrophenyl)amine, the publication is Explosivstoffe (1973), 21(5), 177-81, database is CAplus.

Products of nitrosation and nitration of Ph2NH, 2-nitrodiphenylamine, N-nitrosodiphenylamine, 4-nitrosodiphenylamine, and N-methyldiphenylamine were separated and identified by thin-layer chromatog. by using microscope slides coated with thin layers of adsorbent. This technique is very rapid and simple. Tables of Rf values and colors developed with various reagents are presented. Preliminary information on the reactions was obtained by allowing Ph2NH and some of its derivatives on coated slides to react with nitric and nitrous fumes for various times before development. The results generally follow the pattern found in earlier investigations of Ph2NH reaction products in propellants in which Ph2NH derivatives were used as stabilizers.

Explosivstoffe 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