Вид документа : Статья из журнала Шифр издания : 54/N 64 Автор(ы) : Nikitin E. D., Popov A. P., Yatluk Yu. G. Заглавие : Critical pressures and temperatures of n-diaminoalkanes (C2 to C12) Место публикации : Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 2. - С. 609-611 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The critical temperatures and pressures of eight n-diaminoalkanes NH 2(CH2)nNH2 with n = 2, 3, 4, 6, 8, 9, 10, and 12 have been measured. The method of pulse heating of a wire probe immersed into the liquid under study has been used. Residence times are from (0.03 to 1) ms. The critical properties of diaminoalkanes have been estimated by the group-contribution methods by Joback and Reid, Constantinou and Gani, and Marrero and Gani. These properties have also been calculated using a method based on the assumption that the functions describing the dependence of the critical properties of homologous series on the number of mers in a molecule should be self-similar and provide the scaling behavior for long-chain molecules. The last method provides the best accuracy in calculating the critical properties of diaminoalkanes. For this method, the average absolute errors are equal to 0.4 % for the critical temperature and about 2 % for the critical pressure. © 2006 American Chemical Society Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Popov, A. P.; Yatluk, Yu. G.; Ятлук Юрий Григорьевич