Table 4.
Solubility parameter (δ- from Hildebrand theory) and hydrogen bonding parameter (δh- from Hansen Theory) of solvents and water used in this study (Sameni et al., 2017)

No. Solvent δ (cal/cm3) δh(cal/cm3)1/2
1 Chloroform 9.2 2.8
2 Ethyl acetate 9.1 3.5
3 Methanol 14.3 10.9
4 Water 23.5 20.6