Table 1 The specification of the utilized chemicals
Chemical name | Chemical formula | Provenance | CAS.no | Molar mass (g∙mol−1) | Mass fraction (purity) |
|---|---|---|---|---|---|
D( +)-glucose | C6H12O6 | Merck | 50–99-7 | 180.16 | > 99% |
Choline chloride | C5H14ClNO | Merck | 67–48-1 | 139.62 | > 98% |
Salicylic acid | C7H6O3 | Merck | 69–72-7 | 138.12 | > 99% |
Formic acid | CH2O2 | Merck | 64–18-6 | 46.03 | > 99% |
Acetic acid | C2H4O2 | Merck | 64–19-7 | 60.050 | > 99% |
Dichloromethane (DCM) | C4H11NO3 | Merck | 75–09-2 | 84.93 | > 99% |
Methanol | CH4O | Merck | 67–56-1 | 32.04 | > 98% |
Choline Salicylate [Ch][Sal] | C12H19NO4 | Synthesized | 2016–36-6 | 241.29 | > 82% |
Choline Formate [Ch][For] | C6H15NO3 | Synthesized | 9031–54-3 | 149.19 | > 82% |
Choline Acetate [Ch][Ace] | C7H17NO3 | Synthesized | 14586–35-7 | 163.22 | > 76% |