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molecules 2021, 26, 1221 4 of 17 the range of interest, can be used to acquire the proton spectra instead of deuterated sol-vents. one example of such solvent is n-hexane which is reported to be a.

compact nmr spectroscopy for low-cost identification and,figure 1. structure of the investigated plasticizers in the current study: (a) diethylhexyl phthalate (dehp), (b) diisobutyl phthalate (dibp), (c) diisononyl cyclohexane-1,2-dicarboxylate (dinch), (d) diisononyl phthalate (dinp), (e) tris(2-ethylhexyl) trimellitate (totm). 2. results and discussions 2.1. 1h nmr spectroscopy