Determination of Fe2O3 in Monocalcium Ferrite by Titanium Trichloride Reduction-Potassium Dichromate Titration
WANG Junxiu
XUE Minghao
HOU Junkun
MA Qingwen
Abstract：The sample was dissolved by sulfuric and phosphoric mixed acid, then the hydrochloric acid was added to change iron into ferric chloride. Now, SnCl2 was used to pre-reduce most of Fe3+to Fe2+, after that, TiCl3 was used to quantitatively reduce the rest of Fe3+to Fe2+, taking sodium tungstate as the indicator to indicate the destination of reduction. In the medium of sulfuric and phosphoric mixed acid, with diphenylamine sulfonate as an indicator, the standard solution of potassium dichromate was used to titrate the content of total iron. Then the content of Fe2O3 was calculated. The method is simple, rapid and accurate (the RSD≤0.001 8%).
Keywords：monocalcium ferriteFe2O3titration methodtitanium trichloridepotassium dichromate
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 51-52,55 )