Vapor Pressures of Natural Neon and of the Isotopes20Ne and22Ne from the Triple Point to the Normal Boiling Point

Metrologia ◽  
1972 ◽  
Vol 8 (1) ◽  
pp. 11-27 ◽  
Author(s):  
George T Furukawa
Keyword(s):  
Triple Point ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Vapor Pressures

Some Thermodynamic Properties of Pure and Impure Nitrogen

1974 ◽  
Vol 52 (16) ◽  
pp. 1521-1531 ◽  
Author(s):  
J. Ancsin
Keyword(s):  
Thermodynamic Properties ◽  
Triple Point ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Vapor Pressures ◽  
Freezing Points ◽  
Boiling Points ◽  
Triple Points

Boiling points, freezing points, and vapor pressures (from 56 K to the normal boiling point) for pure and various doped N2 samples have been measured. The normal boiling points for N2 and N2 doped with 100 v.p.p.m. of O2, Ar, Kr, and CO impurities were found to be 77.3439 K, 77.3458 K, 77.3452 K, 77.3454 K, and 77.3444 K respectively. The triple points of the same samples are 63.14635 K, 63.1445 K, 63.14575 K, 63.1487 K, and 63.14675 K respectively. The values obtained for the heats of sublimation, vaporization, and fusion at the triple point of pure N2 were 6773.8, 6049.6, and 724.3 J/mole respectively and the above impurities changed these quantities by the amounts given in Tables 5 and 6.

Prediction of vapor pressures and enthalpies of vaporization of organic compounds from the normal boiling point temperature

2006 ◽  
Vol 248 (1) ◽  
pp. 70-77 ◽  
Author(s):  
Eleni Panteli ◽  
Epaminondas Voutsas ◽  
Kostis Magoulas ◽  
Dimitrios Tassios
Keyword(s):  
Organic Compounds ◽  
Boiling Point ◽  
Normal Boiling Point ◽  
Vapor Pressures ◽  
Point Temperature

Normal Boiling Point and Triple Point Temperatures of Neon

Metrologia ◽  
1970 ◽  
Vol 6 (1) ◽  
pp. 35-37 ◽  
Author(s):  
G T Furukawa ◽  
W G Saba ◽  
D M Sweger ◽  
H H Plumb
Keyword(s):  
Triple Point ◽  
Boiling Point ◽  
Normal Boiling Point

Prediction of vapor pressures of pure compounds from knowledge of the normal boiling point temperature

2002 ◽  
Vol 198 (1) ◽  
pp. 81-93 ◽  
Author(s):  
Epaminondas Voutsas ◽  
Maria Lampadariou ◽  
Kostis Magoulas ◽  
Dimitrios Tassios
Keyword(s):  
Boiling Point ◽  
Normal Boiling Point ◽  
Vapor Pressures ◽  
Point Temperature ◽  
Pure Compounds

The Realization of the Normal Boiling Point of Neon

Metrologia ◽  
1978 ◽  
Vol 14 (1) ◽  
pp. 9-13 ◽  
Author(s):  
R C Kemp ◽  
W R G Kemp
Keyword(s):  
Boiling Point ◽  
Normal Boiling Point

Exciplex-Based Vapor/Liquid Visualization Systems Appropriate for Automotive Gasolines

1993 ◽  
Vol 47 (6) ◽  
pp. 782-786 ◽  
Author(s):  
Lynn A. Melton
Keyword(s):  
Cross Talk ◽  
Spectral Region ◽  
Boiling Point ◽  
Automotive Gasoline ◽  
Normal Boiling Point ◽  
Tertiary Amines ◽  
Temperature Range ◽  
Exciplex Emission ◽  
Visualization Systems ◽  
Vapor Liquid

This paper reports the development of exciplex-based vapor/liquid visualization systems based on exciplexes formed from tertiary amines and fluorine-substituted benzene and/or toluene. These systems are expected to be virtually coevaporative with solvents (fuels) boiling in the temperature range 70 to 110°C and thus are expected to track the vaporization of automotive gasoline effectively. A system consisting of 10% triethylamine/0.5% fluorobenzene/89.5% hexane should be coevaporative with a normal boiling point of 69°C. A system consisting of 10% n-propyldiethylamine/0.5% 4-fluorotoluene/89.5% isooctane should be coevaporative with a normal boiling point of approximately 100°C. Although the coevaporation of these systems is excellent, the exciplexes revert to varying extents to excited monomer at temperatures near 100°C. Thus there is considerable cross talk from the liquid into the vapor spectral region. The tertiary amines generally require excitation at wavelengths below 250 nm; the fluorobenzene or 4-fluorotoluene can be excited at 266 nm. Monomer emission peaks at 290 nm; exciplex emission peaks at 350 nm.

PRELIMINARY STUDY OF THE FRACTIONATION OF ISOTOPIC ISOMERS BY DISTILLATION

1935 ◽  
Vol 13b (2) ◽  
pp. 114-121 ◽  
Author(s):  
D. F. Stedman
Keyword(s):  
Vapor Pressure ◽  
Boiling Point ◽  
Atomic Weight ◽  
Liquid Oxygen ◽  
Vapor Pressures ◽  
Normal Concentration ◽  
Short Run ◽  
Total Separation ◽  
Preliminary Study

Slight separations of some isotopic isomers have been achieved by equilibrium rectification. In the case of chlorine the total separation amounted to 0.048 atomic weight units; 28.6% of the O18 has also been removed from normal oxygen by the fractionation of water, and in a short run with liquid oxygen the normal concentration of O18 has been raised from 0.2% to 0.25%. The last-mentioned separation can be carried considerably further with present equipment.CH3D was synthesized. Its boiling point appears to be 0.5 °C. lower than that of methane.The vapor pressures of a 56.8% solution of D2O were measured, and it is suggested that the published values of the vapor pressure of D2O at temperatures lower than 40 °C. may be slightly too high.

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