The solubility of carbon dioxide, CO2, in dipentaerythritol hexaheptanoate (DiPEC7) and a polypropylene glycol dimethyl ether (PAG1) was measured at 283.15 K, 298.15 K, 323.15 K, and 348.15 K, and pressures up to 7 MPa in a high-pressure gas solubility apparatus. A total of 42 pTx values were measured with an isochoric technique, having a mole fraction relative uncertainty of 4 %. The results for DiPEC7 together with the experimental literature data show that, in the present analyzed range, the CO2 solubility expressed in mole fraction in the polyolester oils increases with the number of the polar carboxyl groups. In mass fraction, the solubilities of CO2 in DiPEC7 are lower than in PAG1 and also lower than in several other pentaerythritol esters (PEs).
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C52H94O13
dipentaerythritol hexaheptanoate
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.