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. 2021 Dec 16;11:24081. doi: 10.1038/s41598-021-03212-z

Table 7.

The calculated Hildebrand-Hansen solubility parameters for the materials used by Hoftyzer and Van Krevelen method29.

Systems δd δp δh δt
PTH 23.93 7.39 8.133 26.332
Ethanol 15.80 8.80 19.40 26.522
Ethanol/DES (ChCl:Gly) 17.31 5.05 22.07 28.496
Ethanol/DES (ChCl:EG) 16.47 4.86 19.74 26.169