Category: 1821-27-8

Vermesse-Jacquinot, C. published the artcileThermodynamic and kinetic investigation of super-alkaline media. I. Solvents with waterlike electrochemical properties, Application of Bis(4-nitrophenyl)amine, the publication is Journal de Chimie Physique et de Physico-Chimie Biologique (1965), 62(2), 185-97, database is CAplus.

Acid-base measurements were carried out in solvents with dielec. constants >18, such as MeOH, EtOH, iso-PrOH, and especially ethanolamine. By spectrophotometric methods the autoprotolysis of ethanolamine was measured, and a new scale of acidity in this solvent allows acidities of the order of 19.5 to be obtained.

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 C14H14, Application of Bis(4-nitrophenyl)amine.

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

Volk, F. published the artcileDetermining the shelf life of solid propellants, SDS of cas: 1821-27-8, the publication is Propellants and Explosives (1976), 1(3), 59-65, database is CAplus.

Chromatog. anal. of propellant stabilizer reaction products is described for propellants containing diphenylamine [122-39-4], 2-nitrodiphenylamine [119-75-5], acardite I [122-39-4], acardite II [13114-72-2], and ethylcentralite [85-98-3] as a result of storage at 65-90¡ã. Aging of the propellants gives rise to stabilizer reaction products which are characteristic of the aging condition. These reaction products can be used as a criterion for different stages of aging within the shelflife of solid propellants.

Propellants and Explosives 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 C19H17N3O, SDS of cas: 1821-27-8.

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

Volk, F. published the artcileThin-layer chromatographic determination of the lifetime of propellant powders, Category: catalysis-chemistry, the publication is Symposium on Chemical Problems Connected with the Stability of Explosives, [Proceedings] (1977), 29-53, database is CAplus.

The aging of propellants can be estimated by heating them at 65-95¡ã, followed by extraction and 2-dimensional thin-layer chromatog. of the reaction products of the stabilizers. Ph2NH [122-39-4] and Et centralite [85-98-3] gave 29 and 24 reaction products, resp. A good correlation was found between the reaction products and temperature and time, so the safe shelf life of the propellants can be estimated by short periods of heating at moderate temperature

Symposium on Chemical Problems Connected with the Stability of Explosives, [Proceedings] 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 C15H14Cl2S2, Category: catalysis-chemistry.

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

Yasuda, Stanley K. published the artcileIdentification of N-nitroso- and nitrodiphenylamines by two-dimensional thin-layer chromatography, Product Details of C12H9N3O4, the publication is Journal of Chromatography (1964), 14(1), 65-70, database is CAplus and MEDLINE.

By two-dimensional thin-layer chromatography on silica gel containing Zn dust, derivatives of diphenylamine (I) were separated and identified with p-diethylaminobenzaldehyde. Products from I in PBX explosives, as well as those prepared by treatment of I and 2-nitrodiphenylamine with N₂O₄, were identified. Derivatives of I studied were the 2-nitro, N-nitroso, N-nitroso-4-nitro, 2,4-dinitro, 2,4,6-trinitro, 2,4′-dinitro, 2,2′-dinitro, N-nitroso-4,4′-dinitro, N-nitroso-2-nitro, 4-nitro, N-nitroso-2,4′-dinitro, 2,4,4′-trinitro, 2,2′,4-trinitro, N-nitroso-2,2′-dinitro, 4-nitroso, 2,2′,4,4′-tetranitro, 2,2′,4,4′,6-pentanitro, 4,4′-dinitro, and 2,2′,4,4′,6,6′-hexanitro.

Journal of Chromatography 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 C21H24O8, Product Details of C12H9N3O4.

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

Serve, D. published the artcileElectrochemical properties of diphenylamines and their oxidation products in organic media. IV. The p-monosubstituted diphenylamines and the mechanism of coupling product formation for different diphenylamines, Application In Synthesis of 1821-27-8, the publication is Electrochimica Acta (1976), 21(12), 1171-81, database is CAplus.

The anodic oxidation of 9 paramonosubstituted diphenylamines, e.g. (RC6H4)2NH, R = NH2, OMe, Br, in MeCN was studied by rotating disk electrode voltammetry, cyclic voltammetry, and controlled-potential electrolysis with simultaneous recording of ESR and visible spectra. Depending on the acidity/basicity of the medium, the primary cation radical gives one or two of the coupling products, N,N’-diarylbenzidine, 5,10-diaryl-5,10-dihydrophenazine, N,N,N’-triaryl-p-phenylenediamine, or tetraarylhydrazine; the last 2 are observed only in basic media. N,N’-diarylbenzidine results from Cp-Cp coupling of two R2NH?+ (R = aryl) radicals, whereas tetraarylhydrazine comes from the dimerization of two R2N? in basic media. Dihydrophenazine and phenylenediamine result from Cp-N coupling between R2NH and the corresponding R2N+ (R = aryl). Selection rules for the formation of dihydrophenazines are presented.

Electrochimica Acta 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 C15H10O2, Application In Synthesis of 1821-27-8.

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

Takasuka, Mamoru published the artcileSubstituent effects on the amino stretching vibration band in 4′-substituted 4-nitrodiphenylamines, Quality Control of 1821-27-8, the publication is Spectroscopy Letters (1985), 18(9), 659-64, database is CAplus.

IR spectral measurements were made to obtain the frequency (¦Í_NH) and the integrated intensity (A) of the amino stretching vibration band of 4′-substituted 4-nitrodiphenylamines in dilute CHCl₃ solution The effects of substituents were examined and the maximum and min. correlations were obtained for the ¦Í_NH and A values against the substituent constants (¦Ò), resp.

Spectroscopy Letters 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 C44H28ClFeN4, Quality Control of 1821-27-8.

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

Terrier, Francois published the artcileIonic associations in solutions of concentrated methoxides, and their effect on basicity, SDS of cas: 1821-27-8, the publication is Annales de Chimie (Paris, France) (1969), 4(3), 153-73, database is CAplus.

The behavior of indicators used to establish the acidity functions, HM and JM, appears to be very different in the concentrated solutions of MeONa and MeOK. The pK values of many equilibrium depend on the system employed as is also the case with ionic absorption. The undissocg. nature of these media is strongly marked; details are obtained about the structure of ion pairs which take place in these solutions The only associated species present is the pair MeO-, M+.

Annales de Chimie (Paris, 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 C8H5F3O2S, SDS of cas: 1821-27-8.

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

Oehrle, Stuart A. published the artcileAnalysis of stabilizer degradation products in propellants using HPLC and photodiode array (PDA) detection, Formula: C12H9N3O4, the publication is Journal of Energetic Materials (1997), 15(1), 21-33, database is CAplus.

An anal. of stabilizer and stabilizer degradation products in nitrocellulose-based propellants was carried out by high-performance liquid chromatog. (HPLC) with photodiode array (PDA) detection. The anal. was finished in <12 min using an isocratic mobile phase. Using PDA detection provides the capability of monitoring at several different wavelengths as well as providing UV spectra which could be used to assess peak purity and match the spectra against known library spectra.

Journal of Energetic 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, Formula: C12H9N3O4.

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

Oehrle, Stuart A. published the artcileAnalysis of stabilizer degradation products in propellants using HPLC and photodiode array (PDA) detection, Synthetic Route of 1821-27-8, the publication is Propellants, Explosives, Pyrotechnics (1998), 23(1), 56-60, database is CAplus.

Anal. of stabilizer and stabilizer degradation products in nitrocellulose based propellants was done using HPLC with photodiode array (PDA) detection. Anal. was done in <12 min using an isocratic mobile phase. Using PDA detection provided the capability of monitoring at several different wavelengths as well as providing UV spectra which could be used to assess peak purity and match the spectra against known library spectra.

Propellants, Explosives, Pyrotechnics 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

Peters, Arnold T. published the artcileRelations between the structure and light fastness of nitrodiphenylamine dyes, Quality Control of 1821-27-8, the publication is Industrie Chimique Belge (1967), 32(Spec. No.), 103-5, database is CAplus.

The effect on light fastness of the position of the NO2 group in nitrodiphenylamine dyes was studied. The p-quinonoid structure given by 4-nitro derivatives is degraded more readily than the internally H-bonded ¦Ï-quinonoid structure. Fade figures (1% change in amount of visible light absorbed after exposure) for dyeings on secondary cellulose acetate were as follows (NO2 group position(s) and fade figure given): 2, 6.5; 3, 29.1; 4, 34.0; 2,2′, 2.75; 2,4′, 17.9; 2,3′, 7.16; 4,4′, 51.6; 4,3′, 32.2; 3,3′, 23.2. Dyeings on other fibers (Dicel, Tricel, nylon, Courtelle, Acrilan, and Terylene) had the same order of stability. Some relation between fading and the intensity of the uv absorption peak given by the dyes in the 380-425 m¦Ì region is demonstrated.

Industrie Chimique Belge 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