Skip to main content
SpringerLink
Log in

Solubilities of vegetable oils in aqueous ethanol and ethanol-hexane mixtures

  • Technical
  • Published:
Journal of the American Oil Chemists’ Society

Summary

The solubility of vegetable oils in aqueous ethanol depends on the concentration of alcohol and temperature of the system. At ordinary temperatures even absolute alcohol is not a good solvent for vegetable oils since the solubility is even less than 10 g. of oil per 100 g. of alcohol. Mowrah, safflower, peanut, and cottonseed oils are soluble in absolute alcohol at 70°C. All the oils investigated are found to be miscible above the boiling point of alcohol even if the concentration is 98%. In 95% ethanol they are miscible between 90° and 100°C. Addition of a good solvent, like n-hexane, increases the solubility of oils, and the solubility temperatures are lowered. From the results obtained by various methods of solubility determination it is found that the apparatus employed in the present work yields more reliable results by eliminating the visual observation of turbidity temperatures, ensuring vigorous stirring and allowing sufficient amount of time to attain equilibrium conditions in determining the solubilities of vegetable oils.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Harris, W. D., Bishop, F. F., Lyman, C. M., and Helpert, R., J. Am. Oil Chemists' Soc.,24, 370–375 (1947).

    CAS  Google Scholar 

  2. Magne, F. C., and Skau, E. L., J. Am. Oil Chemists' Soc.,30, 288–291 (1953).

    CAS  Google Scholar 

  3. Measmer, S. G., Sweeney, O. R., and Arnold, L. K., Proc. Iowa Acad. Sci.,54, 189–197 (1947).

    CAS  Google Scholar 

  4. Rao, Rama Kanth, Krishna, M. G., Zaheer, S. H., and Arnold, L. K., J. Am. Oil Chemists' Soc.,32, 420–423 (1955).

    CAS  Google Scholar 

  5. Rao, Rama Kanth, and Arnold, L. K., J. Am. Oil Chemists' Soc.,33, 82–84 (1956).

    Article  CAS  Google Scholar 

  6. Rao, Rama Kanth, and Arnold, L. K., J. Am. Oil Chemists' Soc.,33, 389–391 (1956).

    Google Scholar 

  7. Ramalingam, K., Ph.D. thesis, Osmania University, Hyderabad, India (July 1955).

  8. Sato, M., Inaba, T., and Kitagawa, K., J. Soc. Chem. Ind. Japan,37, No. 11, 718 (1934).

    CAS  Google Scholar 

  9. Sato and Sakai, report, Central Lab., S. Manchuria Rly. Co. pp. 6, 1929.

  10. Taylor, I., Larson, L., Johnson, W., Ind. Eng. Chem.,28, 616–618 (1936).

    Article  CAS  Google Scholar 

Download references

Author information

Author notes

  1. Ramalingam Kaparthi

    Present address: Department of Chemical Technology, Osmania, University, Hyderabad, India

  2. K. S. Chari

    Present address: Regiona, Research Laboratory, Hyderabad, India

Authors and Affiliations

  1. Department of Chemical Engineering, University of Cincinnati, Cincinnati, Ohio

    Ramalingam Kaparthi & K. S. Chari

Authors
  1. Ramalingam Kaparthi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. K. S. Chari
    View author publications

    You can also search for this author in PubMed Google Scholar

About this article

Cite this article

Kaparthi, R., Chari, K.S. Solubilities of vegetable oils in aqueous ethanol and ethanol-hexane mixtures. J Am Oil Chem Soc 36, 77–80 (1959). https://doi.org/10.1007/BF02540248

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02540248

Keywords

Search

Navigation