Sulfur was not “discovered” at a single moment in history; it has been known since prehistoric times , long before written records, so no individual discoverer is credited.

However, there are two key milestones people often ask about:

  • Ancient recognition: Sulfur was already in use by at least 2000 BC in early civilizations, including in the Mediterranean region and around volcanic areas (for example, near Mount Etna in Sicily).
  • Recognition as a chemical element: In the late 18th century, chemists clarified its true nature. By the early 1800s, sulfur was accepted as a fundamental element rather than a compound, thanks to work by Antoine Lavoisier and later confirmation by French chemists such as Gay-Lussac and Thénard.

So, if you need a simple answer for a school-style question:

Sulfur has been known since prehistoric times, but it was firmly recognized as a distinct chemical element in the late 18th to early 19th century.

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