The International
Agency for Research on Cancer has designated pentachlorophenol as a possible
carcinogen.
What is it? Pentachlorophenol (PCP) is usually found
as a grey or brown powder, beads or flakes. It has a sharp odour when
heated, but is almost odourless at room temperature. It dissolves only very
slightly in water, but easily in fats and oils. It does not evaporate
easily, but can be broken down by sunlight. In soils, PCP is broken down by
micro-organisms to other compounds.
What is it used for? PCP is used as a leather & wood
preservative and as a pesticide on masonry. Our Shoes are the main source of
PCP.
Where does it come from? The major sources of PCP releases are
from treated timber or masonry, from its manufacture, storage, transport and
application. PCP is a man-made chemical - there are no natural sources of
release to the environment.
How might it affect the environment? PCP is toxic to wildlife in the
vicinity of its release. It can also accumulate in the environment. It is
however unlikely to harm the environment far from the site of emission or to
have any other global environmental effects.
Pentachlorophenol (PCP) can enter the
body either by inhalation of PCP vapours, ingestion of contaminated water or
food, or by dermal contact with wood treated with preservatives containing
PCP.
Inhalation of air containing high levels of PCP for short periods of time
can be harmful to the kidneys, liver, blood, nervous system, immune system
and gastrointestinal tract. Exposure to low levels of PCP over long periods
of time is believed to cause a range of adverse health effects, including
damage to the nervous system, liver, kidney and blood.
Ingestion of high levels of PCP can cause damage to the digestive system.
Ingestion of very high levels can lead to increased body temperature and, in
extreme cases, death.
Dermal contact with large amounts of PCP can cause irritation of the skin,
eyes and mouth in humans.
The International Agency for Research on Cancer has designated
pentachlorophenol as a possible carcinogen.
However, exposure to pentachlorophenol at normal background levels is
unlikely to have any adverse effect on human health.
For information about how the International
Agency for Research on Cancer (IARC) classify the carcinogenicity of
substances, please
click here