Solvent extraction of hydrofluosilicic acid with alamine 336

Stig Stenström, S Wingefors

Research output: Contribution to journalArticlepeer-review


Extraction constants for the solvent extraction of hydrofluosilicic acid with Alamine 336 have been determined. Two species were identified, (R3NH+ )2 SiF62- and R3NH+ HSiF6, whose respective extraction constants were determined to be log K21 = 7.42 and log K11 = 2.60. For the dissociation of hydrofluosilicic acid the activity coefficient model presented by Bromley was adapted to sulphuric acid and the values used for hydrofluosilicic acid. The effect of the diluent was experimentally investigated.
Original languageEnglish
Pages (from-to)426-431
JournalCanadian Journal of Chemical Engineering
Issue number3
Publication statusPublished - 1986

Subject classification (UKÄ)

  • Chemical Engineering


Dive into the research topics of 'Solvent extraction of hydrofluosilicic acid with alamine 336'. Together they form a unique fingerprint.

Cite this