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. Author manuscript; available in PMC: 2015 Oct 2.
Published in final edited form as: Fluid Phase Equilib. 2015 Aug 25;400:103–113. doi: 10.1016/j.fluid.2015.05.009

Figure 2.

Figure 2

Density as function of ionic liquids’ molecular weight, for tosylate- (308 K), methylsulfate- (298 K), 1-butyl-3-methylimidazolium (298 K) and trihexyl(tetradecyl)phosphonium-based ILs (323 K).[20,47,48,52–62] The lines are guides for the eyes.