Complexometric titration of iron (III) by EDTA using β-diketones (acetyl-acetone and aceto-acetic ester) as metal indicators

  • Phatik Chandra Kundu


Iron(III) can be determined titrimetrically with EDTA using β- diketones like acetylacetone or acetoacetic ester as metal indicators. The reaction should be carried out at pH 1.1–2.1. No buffer is required for this estimation. Magnesium when present in thirty-fold excess and calcium in nine-fold excess have no interferences. NaH2PO4 · 2 H2O in four-fold excess will not interfere. The interference caused by fluoride ion can be eliminated by boric acid.


Iron Magnesium EDTA Titration Fluorid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Eisen(III) kann bei pH 1,1–2,1 mit ÄDTA-Lösung titriert werden, wenn man β-Diketone (Acetylaceton oder Acetessigester) als Indicatoren verwendet. Ein Puffer ist nicht erforderlich. Magnesium, Calcium und Natriumdihydrogenphosphat stören nicht, wenn sie in weniger als der 30-, 9- bzw. 4fachen Menge vorhanden sind. Die Störung durch Fluorid kann durch Zusatz von Borsäure beseitigt werden.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Baškirceva, A. A., and E. M. Jakimec: Zavodskaja Laborat. 21, 533 (1955); cf. Chem. Abstr. 49, 15129 (1955).Google Scholar
  2. 2.
    Becker, F.: Festschr. Paul Schlapfer 1950, 16; cf. Chem. Abstr. 46, 8341 (1952).Google Scholar
  3. 3.
    Becker, F.: Rev. Matér. Construct. Trav. publ. 431/432, 1–6, Aug.–Sept. (1951).Google Scholar
  4. 4.
    Betz, J. D., and C. A. Noll: J. Amer. Water Works Assoc. 42, 49 (1950); cf. Chem. Abstr. 48, 9262 (1954).Google Scholar
  5. 5.
    Biedermann, W.: Dissertation, Univ. Zürich 1947.Google Scholar
  6. 6.
    Butt, L.T., and N. Strafford: Anal. chim. Acta (Amsterdam) 12, 124 (1955); cf. Z. analyt. Chem. 148, 278 (1955/56).Google Scholar
  7. 7.
    Combes, A.: C. R. Acad. Sci. 105, 868 (1888).Google Scholar
  8. 8.
    Flaschka, H.: Mikrochim. Acta (Wien) 1954, 361; cf. Z. analyt. Chem. 144, 397 (1955).Google Scholar
  9. 9.
    Lydersen, D., and O. Gjems: Z. analyt. Chem. 138, 249 (1953).Google Scholar
  10. 10.
    Musil, A., and M. Theis: Z. analyt. Chem. 144, 351 (1955).Google Scholar
  11. 11.
    Pulsifer, H. B.: J. Amer. chem. Soc. 26, 967 (1904).Google Scholar
  12. 12.
    Schwarzenbach, G., and H. Flaschka: Komplexone, p. 25, Fa. Siegfried A.-G.Google Scholar
  13. 13.
    Schwarzenbach, G., and J. Heller: Helv. chim. Acta 34, 576 (1951); cf. Chem. Abstr. 45, 7461 (1951).Google Scholar
  14. 14.
    Schwarzenbach, G., and A. Willi: Helv. chim. Acta 34, 528 (1951).Google Scholar
  15. 15.
    Sommer, L., and Z. Kolařík: Chem. Listy 50, 1445 (1956); cf. Z. analyt. Chem. 156, 306 (1957).Google Scholar
  16. 16.
    Welcher: The Analytical Uses of Ethylene Diamine Tetraacetic Acids, p. 6, 7; D. van Nostrand Comp., Inc., Princeton, N. J. 1958.Google Scholar

Copyright information

© Springer-Verlag 1961

Authors and Affiliations

  • Phatik Chandra Kundu
    • 1
  1. 1.Chemical Laboratory of Chandernagore CollegeChandernagore, West BengalIndia

Personalised recommendations