Table 1.

The solubility of AZA, pH of the DESs, partition coefficient of AzA in the DESs, viscosity, spreadability and contact angle of the DESs.

DESs	AzA Solubility mg/g IL Mean ± SD	pH ± SD	Log p	Viscosity (mPa.s) ± SD at 30 °C	Spreadability Cm (Mean ± SD)	Contact Angle (Θ)
MC11	NM	NM	NM	15,872 ± 20.1	2.91 ± 0.13	NM
MC12	NM	NM	NM	51,950 ± 25.1	2.91 ± 0.13	NM
MC21	NM	NM	NM	403,000 ± 25.1	2.91 ± 0.13	NM
MCP111	156.5 ± 7.1	3.01 ± 0.01	2.12	1504 ± 12.1	5.2 ± 0.01	75 ± 3.4
MCP112	172.25 ± 8.2	3.11 ± 0.02	2.40	1076 ± 7.2	8.0 ± 0.12	70 ± 2.9
MCP114	178.0 ± 6.8	3.00 ± 0.01	2.65	721 ± 5.1	9.2 ± 0.21	65 ± 2.4
MCP116	194.1 ± 10.1	3.13 ± 0.01	2.91	340 ± 7.1	11.4 ± 0.31	53 ± 2.1
MCP121	92.0 ± 7.6	2.60 ± 0.01	2.12	5120 ± 19.1	3.01 ± 0.13	79 ± 3.4
MCP122	130.5 ± 8.9	2.61 ± 0.02	2.21	4440 ± 10.2	5.5 ± 0.16	76 ± 2.9
MCP124	145.5 ± 8.1	2.62 ± 0.01	2.21	822 ± 9.2	7.7 ± 0.12	72 ± 2.4
MCP126	152.6 ± 10.1	2.62 ± 0.015	2.45	646 ± 7.1	8.3 ± 0.21	69 ± 2.1
Skinorin®	-	-	-	380 ± 5.1	7.3 ± 0.11	-
Azelaic acid	≈0.24 g/100 g	-	2.01	-	-	-

NM: the reading was not possible to perform due to the high viscosity.