NCIt definition : A clear, colorless, flammable liquid cyclic ether with an ethereal odor. Furan is
used as an intermediate in the production of tetrahydrofuran, pyrrole and thiophene.
Inhalation exposure to this substance causes eye and skin irritation and central nervous
system depression. Furan is mutagenic in animals and is reasonably anticipated to
be a human carcinogen based on evidence of carcinogenicity in experimental animals.
(NCI05);