the.com/naphthalene

The smell of mothballs, built from the same stuff as soot and tar.

means A white, crystalline hydrocarbon with a sharp, acrid smell, derived from coal tar or petroleum, historically used to make mothballs and dyes.

from Coined in the 1820s from 'naphtha' — an old word for flammable, volatile liquids distilled from coal or petroleum — plus the chemistry suffix '-ene', which flags it as a hydrocarbon related to other '-ene' compounds like benzene. 'Naphtha' itself traces back through Latin and Greek to a Persian or Akkadian root tied to bitumen and oil seeps, so the name carries the smell of ancient tar pits all the way into the mothball drawer.

origin
distilled from coal tar, not naphtha
structure
two fused benzene rings, flat as paper
moth logic
sublimes straight from solid to gas, fumigating closets
dark past
once a key ingredient in mothballs and dyes
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