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Critical temperatures and pressures and high temperature vapour pressures of seven alcohols
Author(s) -
Lydersen Aksel L.,
Tsochev Vassil
Publication year - 1990
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270130117
Subject(s) - thermodynamics , chemistry , table (database) , vapor pressure , critical line , critical point (mathematics) , reduced properties , atmospheric temperature range , relative standard deviation , line (geometry) , propanol , analytical chemistry (journal) , ethanol , organic chemistry , chromatography , mathematics , physics , mathematical analysis , geometry , computer science , detection limit , data mining
Critical temperatures and pressures have been determined experimentally for the four lowest n ‐alcohols, 2 ‐propanol, 2 ‐butanol, and 2 ‐methyl‐ 1 ‐propanol, and are given in the penultimate line of Table 3. The last line of Table 3 lists the weighted mean critical pressures, with the corresponding critical temperatures obtained from he vapour pressure equation. Comparison with the corresponding data from standard reference books reveals deviations from the experimental data in some [2, 4] and incorrect critical pressure for ethanol in all five reference books quoted in Table 3. In addition, vapour pressure data were obtained for the same alcohols in the temperature range approaching the critical point. The measurements are reproduced by the simplified Clausius‐Clapeyron equation with the constants and standard deviation given in Table 2.