“Chemical element whose use led to the first known law against poisoning” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.ARSENIC is the answer to the New York Times crossword clue “Chemical element whose use led to the first known law against poisoning”. It was last seen in the puzzle of February 15, 2026, where it runs at 82 Across and fills 7 squares. It crosses 7 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.