mesanaw
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Chromium Sulphate from Stainless Steel
I'm trying to make Chrome Alum from stainless steel as a starting material, but I am having trouble separating chromium sulfate from the ferrous
sulfate.
The resulting mixture from reacting stainless steel with dilute sulfuric acid is two parts: one is a dark liquid and the other a green slushy-like
material. The dark liquid portion clearly has some ferrous sulfate in it.
Is there any way to separate the two compounds while leaving the chromium sulfate in tact?
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DraconicAcid
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Isolation of chromium compounds from stainless steel has been discussed in other threads.
I suggest sodium hydroxide. Cr forms a soluble complex ion; Fe does not.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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