CwisGons - 15-6-2021 at 08:30
Hello everyone. I have a conundrum. I need to make ferroin, but while I have o-phenanthroline the ferrous sulfate I have is several years old.
However, I have newly bought ferrous ammonium sulfate, so can I use that for analytical purposes?
Triflic Acid - 15-6-2021 at 09:14
I mean, just mix the ferrous ammonium sulfate and o-phen solutions and you will get a solution of ferroin. I personally have never made it though, so
take my advice with a grain of salt.
Bedlasky - 15-6-2021 at 12:52
Surely you can use it. Small amount of Fe(III) doesn't matter in ferroin indicator.