Tzu-Chi Wang, Yueh-Ta Wu
Jan 14, 2016
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Influential Citations
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Journal
Journal of Chemical & Engineering Data
Abstract
This research focuses on measuring the solubility of three antioxidants—ethylenediaminetetraacetic acid disodium salt hydrate, ethylenediaminetetraacetic acid calcium disodium salt hydrate, and l-cysteine hydrochloride—in supercritical carbon dioxide. Using a semiflow apparatus, the experiment takes data at 308.15, 313.15, and 318.15 K with pressure ranging from 10 to 22 MPa (for ethylenediaminetetraacetic acid disodium salt dihydrate) or from 12 to 24 MPa (for ethylenediaminetetraacetic acid calcium disodium salt hydrate and l-cysteine hydrochloride). Two semiempirical equations—one proposed by Chrastil, the other Mendez-Santiago and Teja—are applied to find the correlated relationship of the experimental data. With the choice of fitted parameters, the correlation derived from the two equations are satisfactory: the average absolute relative deviation is under 5.1%.