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The frequency maxima of four solvatochromic probes were measured (25, 50, and 75 °C) in eight liquid alkanolamine solvents. Additionally, the indices of refraction of the alkanolamine solvents were measured. The frequency maxima were used to calculate solvatochromic interaction parameters. The values of the solvatochromic parameters did not vary greatly from one alkanolamine to another; however, the values of the solvatochromic parameters were high, indicating strong interaction abilities in these solvents.
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Lagalante et al. (2000) studied this question.
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