naphthalene
C10H9, a white crystalline solid, an aromatic
hydrocarbon consisted of two joined
benzene rings; it is more reactive than
benzene. Naphthalene is produced from coal
tar and is used to make phthalic anhydride (see acid
anhydride), as an intermediate in dye manufacture,
and for mothballs. Molecular weight 128.2, melting point 81°C, boiling
point 218°C. Related category
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