Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The vapor pressures of anthracene, catechol, hydroquinone, caffeic acid, ferulic acid, gentisic acid, and myoinositol have been measured by an isothermal Knudsen effusion method. The vapor pressure correlations fit to the following linear equations: anthracene, ln(p/Pa) ) (31.886 +/- 0.440) to (11496 +/- 149) T/K (from 320 K to 354 K); catechol, ln(p/Pa) ) (31.05 +/- 0.18) to (9618+/-56) T/K (from 295 K to 310 K); hydroquinone, ln(p/Pa) ) (34.595 +/-0.455) to (12102 +/-150) T/K (from 327 K to 348 K); caffeic acid, ln(p/Pa) ) (45.122 +/- 1.320) to (20466 +/- 550) T/K (from 409 K to 424 K); ferulic acid, ln(p/Pa) ) (39.454 +/- 0.402) to (15925 +/-153) T/K (from 369 K to 390 K); gentisic acid, ln(p/Pa) ) (36.297 +/-0.454) to (14184+/- 168) T/K (from 362 K to 379 K); and myoinositol, ln(p/Pa) ) (44.366+/-0.702) to (20931 +/-315) T/K (from 438 K to 458 K). The sublimation enthalpies and entropies of these samples are calculated.