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The Collaborative International Dictionary of English v.0.48 (gcide)

Naphthalene \Naph"tha*lene\, n. (Chem.)
A white crystalline aromatic hydrocarbon, {C10H8}, analogous
to benzene, and obtained by the distillation of certain
bituminous materials, such as the heavy oil of coal tar. It
is the type and basis of a large number of derivatives among
organic compounds. Formerly called also {naphthaline}.
[1913 Webster]

{Naphthalene red} (Chem.), a dyestuff obtained from certain
diazo derivatives of naphthylamine, and called also
{magdala red}.

{Naphthalene yellow} (Chem.), a yellow dyestuff obtained from
certain nitro derivatives of naphthol.
[1913 Webster]

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