Safety

Safety

⚠️ Potassium manganate(VII) is a strong oxidiser, stains skin and clothing, and is harmful if ingested — wear safety goggles, gloves and a lab coat. Dilute sulfuric acid used to acidify the iron solution is an irritant. Iron(II) sulfate from crushed tablets is mildly irritating to skin and eyes. Use a pipette filler (never mouth-pipette) and clamp the burette securely. Dispose of manganate(VII) waste into the heavy-metal/oxidiser waste container, never down the sink.