Solubility of β-FeF3·3H2O in mixtures of nitric and hydrofluoric acid

Kerstin M. Österdahl, Åke C. Rasmuson

Research output: Contribution to journalArticlepeer-review

Abstract

The solubility of β-FeF3·3H2O has been measured in solutions with different concentrations of nitric acid (0 to 7 m) and hydrofluoric acid (1 to 6 m) at the temperatures of (30, 40, and 50)°C. The total iron concentration at equilibrium was measured with inductively coupled plasma (ICP) spectroscopy. The solubility was evaluated in terms of the stepwise complexation of iron by fluoride ions at different ionic strength and temperature. The solubility of β-FeF3·3H2O increases with decreasing concentration of HF and HNO3 and increasing temperature.

Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalJournal of Chemical and Engineering Data
Volume51
Issue number1
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

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