Posted 25 March 2010 - 11:49 AM
Does Ferrous sulfate solution (2mg/ml) change the color form transparent to very light brown , when stored at RT?
If it turns the color can we use the solution still?
Posted 25 March 2010 - 03:02 PM
Posted 28 March 2010 - 02:03 AM
to prevent this by acidifying the solution with sulphuric acid to pH 2 or less.
or use ammonium ferrous sulphate. the Ammonium keep the solution acidic to some extent