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Effects of alcohols on the aqueous solubility of disperse dyes

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Summary

The solubility of azobenzene in water and aqueous alcohol solutions was determined at 5 °C intervals from 0° to 40 °C. Prom the results the thermodynamic parameters for the transfer of one mole of azobenzene from water to aqueous alcohol solution were calculated. It was found that the process was endothermic: furthermore, it was invariably accompanied by a positive unitary entropy change. The solubilizing mechanism of alcohols was explained in terms of an adduct-formation with the compound to be dissolved by means of hydrophobic interaction.

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References

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Author notes

  1. T. Takagishi, A. Katayama, M. Matsuoha, K. Konishi & N. Kuroki

    Present address: Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture, Sakai, Osaka, Japan

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    1. T. Takagishi
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    2. A. Katayama
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    3. M. Matsuoha
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    4. K. Konishi
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    5. N. Kuroki
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    Takagishi, T., Katayama, A., Matsuoha, M. et al. Effects of alcohols on the aqueous solubility of disperse dyes. Kolloid-Z.u.Z.Polymere 232, 699–703 (1969). https://doi.org/10.1007/BF01500167

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    • DOI: https://doi.org/10.1007/BF01500167

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