A colorless, flammable organic liquid (C₄H₈O₂) used as a solvent in manufacturing, laboratories, and historically in cosmetics.
From 'di-' (two) + 'oxane' (a six-membered ring containing two oxygen atoms). The modern chemical name was standardized in the 20th century for this heterocyclic ether compound.
Dioxane was accidentally created in 1889 and became super popular because it dissolved everything—but by the 1970s scientists realized it was a probable carcinogen, so now it's heavily regulated!
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