Adipic and malonic acid aqueous solutions: surface tensions and saturation vapor pressures.
The surface tension of adipic aqueous solutions was measured as a function of temperature (T=278-313 K) and adipic acid mole fraction (X=0.000-0.003) using the Wilhelmy plate method. A parametrization fitted to these data is presented. The evaporation rates of binary water-malonic and water-adipic acid droplets were measured with a TDMA technique at different temperatures (T=293-300 K) and relative humidities (58-80%), and the saturation vapor pressures of subcooled liquid malonic and adipic acids were derived from the data using a binary evaporation model. The temperature dependence of the vapor pressures was obtained as least-squares fits to the derived vapor pressures: ln(Psat,l) (Pa)=220.2389-22634.96/T (K)-26.66767 ln T (K) for malonic acid and ln(Psat,l) (Pa)=140.6704-18230.97/T (K)-15.48011 ln T (K) for adipic acid.
Department of Physical Sciences, University of Helsinki, P.O. Box 64, FI-00014 University of Helsinki, Finland. ilona.riipinen@helsinki.fi
Ilona
I
Riipinen
Ismo K
IK
Koponen
Göran P
GP
Frank
Antti-Pekka
AP
Hyvärinen
Joonas
J
Vanhanen
Heikki
H
Lihavainen
Kari E J
KE
Lehtinen
Merete
M
Bilde
Markku
M
Kulmala
D000272:Adipates / Q000737:chemistry*; D016018:Least-Squares Analysis; D008314:Malonates / Q000737:chemistry*; D012996:Solutions; D013500:Surface Tension; D013696:Temperature
D000272:Adipates; D008314:Malonates; D012996:Solutions; C029900:adipic acid; C030290:malonic acid