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I have Ferric Chloride and Aluminum...

I also have steel filings from grinding steel objects, though some Iron Oxide have be separated (I do have Oxalic Acid and Citric Acid). Though that would give me steel powder, not iron.

Which is the most economical and would yield purest samples?

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    $\begingroup$ If you can figure this out, there are some steel makers who would like to talk to you. You can invite them to a conference at your private island. $\endgroup$ – Shaka Boom Jun 23 '15 at 0:00
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    $\begingroup$ I suggest buying iron powder. It's rather cheap, isn't it? $\endgroup$ – Jan Jun 23 '15 at 0:23
  • $\begingroup$ I think, that only way is sputtered iron melt. Or sand blasting using iron particles. Using wet chemistry, iron oxides will be produced . $\endgroup$ – Jaroslav Kotowski Jun 24 '15 at 11:27
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Sigma-Aldrich has a product that is very pure but rather expensive. I suspect you can have high purity or low cost but not both.

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You could use a high grade metal file on some clean cast iron or an iron nail and coldest the metal shavings which is similar consistency to a powder. An iron nail would be galvanized though so you'd have to take the coating off first. Impurities may be present from the file though.

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  • $\begingroup$ Those are unlikely to be near pure iron, which is very soft, more likely to be high carbon steel. $\endgroup$ – user2617804 Jun 23 '15 at 5:52
  • $\begingroup$ The iron can be precipitated from the chloride salt by reacting it in solution with naoh and aqueous ammonia to form an iron ammonia complex then react that with glucose which should precipitate the metal .It won't be powder tho. $\endgroup$ – Technetium Jun 23 '15 at 6:37

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