Iron: Excellent; Iron Powder: Good if kept dry and protected from fire. Store in a Flinn Saf-Stor™ Can.
Sulfuric, hydrochloric and cold, dilute nitric acids.
Pure iron filings quickly oxidize (rust) and can be messy. Flinn’s iron alloy metal filings act just like iron filings for magnetism experiments, but resist oxidation. Use pure iron filings for iron sulfide or other chemistry experiments.