[化] 萘

[医] 萘

[ noun ]
a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs
<noun.substance>

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}.

{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.