Experimental thermochemical study of 4,5-dichloro-2-nitroaniline

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Manuel A V R Ribeiro da Silva (Author) FCUP; Maria D M C R Ribeiro da Silva (Author) FCUP; Ana I M C L Lobo Ferreira (Author) FCUP; Ana Filipa L O M Santos (Author) FCUP; Tiago L P Galvao (Author) Other

Journal

Title: Journal of Chemical Thermodynamics

Vol. 41

Pages: 1247-1253

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 14 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-003-EQ8

DOI: 10.1016/j.jct.2009.05.013

Abstract (EN): The standard (p degrees = 0.1 MPa) molar enthalpy of formation of 4,5-dichloro-2-nitroaniline, in the gaseous phase, at T = 298.15 K, was derived from the combination of the values of the standard molar enthalpy of formation, in the crystalline phase, at T = 298.15 K, and the standard molar enthalpy of sublimation, at the same temperature. The standard molar enthalpy of formation, in the crystalline phase, at T = 298.15 K, was derived as -(99.7 +/- 1.6) kJ.mol(-1) from the standard massic energy of combustion, in oxygen, measured by rotating-bomb combustion calorimetry. The standard molar enthalpy of sublimation was calculated. (109.4 +/- 0.9) kJ.mol(-1) by the application of the Clausius-Clapeyron equation, to the vapour pressures measured at several temperatures by Knudsen effusion technique. The standard molar enthalpies of formation, in the gaseous phase, of the six dichloro-2-nitroaniline isomers and of the four dichloro-4-nitroaniline isomers were estimated by the Cox Scheme and by the Domalski and Hearing group additivity method and compared with the available experimental values. For the Domalski and Hearing group additivity method four new correction terms were derived.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7