Also known as: Pyrocatechol. CAS Number: 120-80-9. Used as a
topical antiseptic, antifungal preservative on seed potato
pieces, photographic developer, a developer in fur dyes, an
intermediate for antioxidants in rubber and lubricating oils, and
in pharmaceuticals. Chemical formula = C6H6O. Molecular weight =
110.11 g/mol.
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Exposure to catechol may occur during its manufacture and use.
Skin contact with catechol causes eczematous dermatitis in
humans. In humans, absorption through the skin results in an
illness resembling that induced by phenol, except convulsions are
more pronounced. Large doses of catechol can cause depression of
the central nervous system (CNS) and a prolonged rise of blood
pressure in animals. Due to the lack of information regarding the
duration of exposure in the above studies, it is not clear
whether these health effects were observed following acute
(short-term) or chronic (long-term) exposure. Tumors in the
glandular stomach were observed in orally exposed rats. The
International Agency for Research on Cancer (IARC) has classified
catechol as a Group 2B, possible human carcinogen. EPA has not
classified catechol with respect to potential carcinogenicity.