Experiment for effect of other metals on rusting?

given jelly solution+ potassium hexacyanoferrate (III) solution + phenolphthalein are used in the experiment to use in the rusting of iron nail.

question: suggest another substances to replace potassium hexacyanoferrate (III) solution in this experiment?

help us please,,,hehehe faster ..heheheh

Answer:
try potassium permanganate

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