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[warlah]

ive been trying to produce iron II oxide from using a 12 volt power supply, nail electrodes (which are magnetic and not galvenived so im assuming its iron), and sodium chloride as the ions to increase conductivity. the crude product from this electrolysis is a blue powder when in water but after filtration and drying it is a rust red color. ive tried testing the product by mixing aluminum powder with it and putting a magnesium strip in it and lighting it on fire to see if a thermite reaction would accure but no reaction. my thoughts are that the nails arent pure iron and contain other metals like copper. should i get a better source of iron if so where or should i use a better extraction technique to purify the iron oxide.