Estimating Vapor Pressures—a Comparison of Equations

Eco-Relevant Properties of Selected Organosilicon Materials

“…Antoine's Equation [4] is widely used, but all attempts to relate the Antoine constants with molecular structure descriptors have been unsuccessful. After testing several equations, it was determined that it is possible to relate the coefficients in Miller's Equation [10], as modified by McGarry [11], with molecular structure descriptors. This relationship is given by: (7) where T is temperature and P v' T c' and Pc are as previously defined.…”

Nonanalytic vapor pressure equation with data for nitrogen and oxygen

“…To normalize the variables, I eliminate the constants of (1) by use of triple· point and critical-point properties In the definitions.…”

“…An accurate vapor pressure equation is essential for computing thermodynamic properties of fluids, but a satisfactory function remains undiscovered [1).1 To achieve accuracy for thermal property computations, many authors resort to polynomial re presentations of experimental vapor pressure data. This has the serious disadvantage that derivatives, dP/dT etc., may not be reliable.…”

Physical and thermodynamic properties for novel C14 unsaturated aldehydes and C16 saturated amines

“…Several new approaches have recently been proposed ( 7 ) for generating low cost detergent hydrophobes that are novel compositions. These approaches couple conventional oxo olefin hydroformylation process technology with condensationdehydration of the resuklng saturated aldehydes via a so-called oxo-aldol synthesis to produce long-chain (e.g., n = [8][9][10][11][12][13][14][15][16][17][18][19][20] unsaturated branched aldehydes (enals) as process chemical intermediates.…”