Also known as: p-Benzoquinone. CAS Number: 106-51-4. Exists as
yellow prisms, with a strong odor resembling chlorine. Quinone is
used as a chemical intermediate, a polymerization inhibitor, an
oxidizing agent, a photographic chemical, a tanning agent, and
a chemical reagent. Chemical formula = C6H4O2. Molecular weight
= 108.1 g/mol.
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Occupational exposure to quinone may occur in the dye, textile,
chemical, tanning, and cosmetic industries. Acute (short-term)
exposure to high levels of quinone, via inhalation in humans,
results in irritation of the eyes, consisting of discoloration of
the conjunctiva and cornea, and causes dermatitis from dermal
exposure. Chronic (long-term) inhalation exposure to quinone in
humans may result in visual disturbances, and chronic dermal
contact causes skin ulceration. No information is available on
the reproductive, developmental, or carcinogenic effects of
quinone in humans. The results of available animal studies are
insufficient to evaluate the carcinogenicity of quinone. EPA has
not evaluated quinone for carcinogenicity.