2 0 2009 ban gin 0 journal Original Bandres, I.[Isabel] Giner, B.[Beatriz] Artigas, H.[Hector] Lafuente, C.[Carlos] Royo, F. M.[Felix M.] J. Chem. Eng. Data 2009 2009-02-25 Thermophysical Properties of N-Octyl-3-methylpyridinium Tetrafluoroborate Density, speed of sound, refractive index, surface tension, isobaric molar heat capacity, and kinematic viscosity of the room-temperature ionic liquid N-octyl-3-methylpyridinium tetrafluoroborate have been measured over a temperature range. From the results, coefficients of thermal expansion, molar refractions, and dynamic viscosities have been derived. The properties are discussed further in terms of the effect of the variations of the alkyl chain length on the pyridinium cation. 10.1021/je8002095 54 236-240 1 N-octyl-3-methylpyridinium tetrafluoroborate C14H24BF4N 1 Commercial source 1 98 2 Stated by supplier 2 Dried by vacuum heating 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 278.15 5 1 1106.4 5 1 .1 1 280.65 5 1 1105 5 1 .1 1 283.15 5 1 1103.6 5 1 .1 1 285.65 5 1 1102.1 5 1 .1 1 288.15 5 1 1100.7 5 1 .1 1 290.65 5 1 1099.4 5 1 .1 1 293.15 5 1 1097.7 5 1 .1 1 295.65 5 1 1096.3 5 1 .1 1 298.15 5 1 1094.5 5 1 .1 1 300.65 5 1 1093.3 5 1 .1 1 303.15 5 1 1091.5 5 1 .1 1 305.65 5 1 1089.7 5 1 .1 1 308.15 5 1 1088.1 5 1 .1 1 310.65 5 1 1086.3 5 1 .1 1 313.15 5 1 1084.7 5 1 .1 1 315.65 5 1 1083.1 5 1 .1 1 318.15 5 1 1081.4 5 1 .1 1 320.65 5 1 1079.8 5 1 .1 1 323.15 5 1 1078.3 5 1 .1 1 325.65 5 1 1076.5 5 1 .1 1 328.15 5 1 1074.9 5 1 .1 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Speed of sound, m/s Pulse-echo method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 278.15 5 1 1571.9 5 1 .1 1 280.65 5 1 1564.9 5 1 .1 1 283.15 5 1 1557.7 5 1 .1 1 285.65 5 1 1549.2 5 1 .1 1 288.15 5 1 1541.2 5 1 .1 1 290.65 5 1 1533.5 5 1 .1 1 293.15 5 1 1526.3 5 1 .1 1 295.65 5 1 1518.7 5 1 .1 1 298.15 5 1 1511.4 5 1 .1 1 300.65 5 1 1505.4 5 1 .1 1 303.15 5 1 1498.1 5 1 .1 1 305.65 5 1 1491.2 5 1 .1 1 308.15 5 1 1484.6 5 1 .1 1 310.65 5 1 1478.1 5 1 .1 1 313.15 5 1 1472.3 5 1 .1 1 315.65 5 1 1465.7 5 1 .1 1 318.15 5 1 1459.3 5 1 .1 1 320.65 5 1 1453.2 5 1 .1 1 323.15 5 1 1446.5 5 1 .1 1 325.65 5 1 1440.4 5 1 .1 1 328.15 5 1 1433.6 5 1 .1 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Refractive index (Na D-line) Standard Abbe refractometry Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 283.15 5 1 1.459783 7 1 .000001 1 285.65 5 1 1.459069 7 1 .000001 1 288.15 5 1 1.458354 7 1 .000001 1 290.65 5 1 1.457635 7 1 .000001 1 293.15 5 1 1.456913 7 1 .000001 1 295.65 5 1 1.456202 7 1 .000001 1 298.15 5 1 1.455474 7 1 .000001 1 300.65 5 1 1.454765 7 1 .000001 1 303.15 5 1 1.454053 7 1 .000001 1 305.65 5 1 1.453326 7 1 .000001 1 308.15 5 1 1.452613 7 1 .000001 1 310.65 5 1 1.451903 7 1 .000001 1 313.15 5 1 1.451207 7 1 .000001 1 315.65 5 1 1.450469 7 1 .000001 1 318.15 5 1 1.449763 7 1 .000001 1 320.65 5 1 1.44903 7 1 .000001 1 323.15 5 1 1.448307 7 1 .000001 1 325.65 5 1 1.447604 7 1 .000001 1 328.15 5 1 1.446898 7 1 .000001 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Surface tension liquid-gas, N/m Drop volume Liquid Direct value, X 1 Author Liquid Air at 1 atmosphere 1 Temperature, K 1 Author 1 278.15 5 1 .03982 4 1 .00001 1 280.65 5 1 .03928 4 1 .00001 1 283.15 5 1 .0387 4 1 .00001 1 285.65 5 1 .0383 4 1 .00001 1 288.15 5 1 .03791 4 1 .00001 1 290.65 5 1 .03752 4 1 .00001 1 293.15 5 1 .03719 4 1 .00001 1 295.65 5 1 .03681 4 1 .00001 1 298.15 5 1 .03651 4 1 .00001 1 300.65 5 1 .03623 4 1 .00001 1 303.15 5 1 .03594 4 1 .00001 1 305.65 5 1 .03567 4 1 .00001 1 308.15 5 1 .03546 4 1 .00001 1 310.65 5 1 .03522 4 1 .00001 1 313.15 5 1 .03502 4 1 .00001 1 315.65 5 1 .03481 4 1 .00001 1 318.15 5 1 .03463 4 1 .00001 1 320.65 5 1 .03446 4 1 .00001 1 323.15 5 1 .03428 4 1 .00001 1 325.65 5 1 .03413 4 1 .00001 1 328.15 5 1 .03398 4 1 .00001 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Molar heat capacity at constant pressure, J/K/mol differential scanning calorimeter Liquid Direct value, X 1 Author Author Standard deviation of the mean Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 278.15 5 1 433.8 4 1 13.014 .1 1 1 280.65 5 1 435.7 4 1 13.071 .1 1 1 283.15 5 1 437.4 4 1 13.122 .1 1 1 285.65 5 1 439.4 4 1 13.182 .1 1 1 288.15 5 1 441.4 4 1 13.242 .1 1 1 290.65 5 1 443.7 4 1 13.311 .1 1 1 293.15 5 1 446.1 4 1 13.383 .1 1 1 295.65 5 1 448.4 4 1 13.452 .1 1 1 298.15 5 1 450.5 4 1 13.515 .1 1 1 300.65 5 1 452.8 4 1 13.584 .1 1 1 303.15 5 1 455 4 1 13.65 .1 1 1 305.65 5 1 457.2 4 1 13.716 .1 1 1 308.15 5 1 459.2 4 1 13.776 .1 1 1 310.65 5 1 461.3 4 1 13.839 .1 1 1 313.15 5 1 463.3 4 1 13.899 .1 1 1 315.65 5 1 465.1 4 1 13.953 .1 1 1 318.15 5 1 467 4 1 14.01 .1 1 1 320.65 5 1 468.7 4 1 14.061 .1 1 1 323.15 5 1 470.3 4 1 14.109 .1 1 1 325.65 5 1 472 4 1 14.16 .1 1 1 328.15 5 1 473.7 4 1 14.211 .1 1 1 1 Principal objective of the work WZ TRC 2/12/2009 1 Kinematic viscosity, m2/s Capillary tube (Ostwald; Ubbelohde) method Liquid Direct value, X Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 278.15 5 1 .002481 4 1 280.65 5 1 .001926 4 1 283.15 5 1 .00154 4 1 285.65 5 1 .001229 4 1 288.15 5 1 .001016 4 1 290.65 5 1 .0008175 4 1 293.15 5 1 .0006809 4 1 295.65 5 1 .0005585 4 1 298.15 5 1 .0004619 4 1 300.65 5 1 .0003883 4 1 303.15 5 1 .000327 4 1 305.65 5 1 .0002798 4 1 308.15 5 1 .0002384 4 1 310.65 5 1 .0002047 4 1 313.15 5 1 .000177 4 1 315.65 5 1 .0001556 4 1 318.15 5 1 .0001364 4 1 320.65 5 1 .0001192 4 1 323.15 5 1 .0001047 4 1 325.65 5 1 .00009272 4 1 328.15 5 1 .00008215 4