Purification and Properties of Pyrrole, Pyrrolidine, Pyridine and 2-Methylpyridine

Thermodynamic properties of aqueous solutions of pyridine and piperidine

“…Fig. 3 presents comparison of our density data for pyridine with literature data from several sources [10][11][12]. The measured pyridine densities agree with the literature values within 0.15% which is close to our estimated experimental error (±0.1%) for pyridine density measurements.…”

“…3. Density water and pyridine as a function of temperature compared with literature [10][11][12]. For water; ( ) this work, (--) Ref.…”

“…[5]. For pyridine, ( ) this work; (᭹) Muller and Brenneis [10]; ( ) Helm et al [11]; and ( ) Biddescombe et al [12]. The solid line represents calculated values from Eq.…”

Critical temperatures of some organo cyclic compounds

“…Some oxidation had occurred and the procedure recommended by Helm et aZ. 7 was adopted. The material was redistilled over calcium hydride to give a colourless liquid removing the colour ketone formed on oxidation.…”

Thermodynamic properties of the methylpyridines. Part 2. Vapor pressures, heat capacities, critical properties, derived thermodynamic functions between the temperatures 250 K and 560 K, and equilibrium isomer distributions for all temperatures ≥250 K

“…Values read from the graphs differ from the more precise adiabatic calorimetric results (10,11,13,31) by ±0.05·C sat,m . Densities reported near T = 300 K by Biddiscombe et al (95) for all of the methylpyridines, and by Cabezas and Beltrán (64) (83) , Gerasimov et al; (84) •, Aznar et al; (85) +, Botros et al; (86) , Meyer et al; (87) Q, Kyte et al; (88) •, Helm et al; (89) , Toropov; (90) , Holland and Smyth; (91) , Timmermans and Hennaut-Roland; (92) !, Freiser and Glowacki; (93) , Jaeger. (94) accord with the corresponding states correlation, but are not shown in figure 16 for clarity.…”