In the past Creosote was widely used... It preserves the
timber by killing any life form that would degrade it, (either beetle
bacteria, or fungus), but it also kills bees even after long exposure
or "airing".
There is one use to which it may be put... and that is the
preservation of the lower portion of hive stand legs. Simply place 4
tin cans on the ground, each half full of creosote, then place the
stand so that each of its legs are within one of the tins and leave
it to soak into the end grain and partly up the legs.
It is a pity that the use of creosote is so frowned upon...
I like the smell of it.
There is another use for it, that may be legitimate, but I
have not tried this personally... I have read in the past, I cannot
remember where, that it was used to combat acarine mites by
disrupting their sense of smell. The method used was to soak small
sticks of balsa wood (or cedar wood), 6 mm square x 65 mm
long, in the creosote... allow to dry then place on the floorboard, at
the back of the hive. If anyone has more details perhaps they would
Email me. I do not recommend this as there are modern mite controls
available and acarine is not much of a problem in UK these days.
There is no molecular representation since this substance is a mixture
of many compounds.
HIGHLIGHTS: Eating food or drinking water with high levels of creosote
may cause burning in the mouth, and throat, stomach pains, severe skin
irritation, convulsions and kidney and liver problems. Creosote has
been found in at least 33 of the 1,430 National Priorities List sites
identified by the Environmental Protection Agency (EPA).
(FAQ) about creosote.
What is creosote?
Creosote is the name used for a variety of products: wood creosote,
coal tar creosote, coal tar, coal tar pitch, and coal tar pitch
volatiles. These products are mixtures of many chemicals created by
high-temperature treatment of beech and other woods, coal, or from
the resin of the creosote bush. Wood creosote is a colorless to
yellowish greasy liquid with a smoky odour and burned taste. Coal tar
creosote is a thick, oily liquid that is typically amber to black in
colour. Coal tar and coal tar pitch are usually thick, black, or
dark-brown liquids or semi solids with a smoky odour.
Wood creosote has been used as a disinfectant, a laxative and a
cough treatment, but is rarely used these ways today.
Coal tar products are used in medicines to treat skin diseases such
as psoriasis, and are also used as animal and bird repellents,
insecticides, restricted pesticides, animal dips and fungicides.
Coal tar creosote is the most widely used wood preservative in the
United States.
Coal tar, coal tar pitch, and coal tar pitch volatiles are used for
roofing, road paving, aluminum smelting and coking.
What happens to creosote when it enters the environment?
Coal tar creosote is released to water and soil mainly as a result of
its use in the wood preservation industry. It may dissolve in water
and may move through the soil to the groundwater. Once it is in the
groundwater, it may take many years for it to break down.
Coal tar creosote can build up in plants and animals.
No information is available on what happens to wood creosote when it
enters the environment.
How might I be exposed to creosote?
Eating herbal remedies containing the leaves from the creosote bush
(chaparral) which are sold as dietary supplements.
Working in the wood preservative, coke-producing or asphalt industries
Using creosote-treated wood in building fences, bridges or railroad
tracks or installing telephone poles.
Living in treated-wood houses that may result in air or skin contact
with creosote.
Drinking water contaminated by a hazardous waste site.
How can creosote affect my health?
Animal testing is sometimes necessary to find out how toxic substances
might harm people or to treat those who have been exposed. Laws today
protect the welfare of research animals and scientists must follow
strict guidelines.
Breathing vapours of the creosotes, coal tar, coal tar pitch or coal
tar pitch volatiles can cause irritation of the respiratory tract.
Eating large amounts of creosote (any form) may cause a burning in the
mouth and throat and stomach pains. Eating large amounts of herbal
remedies containing creosote bush leaves may cause liver damage, while
large amounts of coal tar creosote may result in severe skin
irritation, eye burns, convulsions, unconsciousness and even death.
Long-term (365 days or longer) exposure to lower levels of coal tar
creosote, coal tar, coal tar pitch or coal tar pitch volatiles by skin
or air contact can cause skin damage such as blistering or peeling.
Animals:- Studies have shown that when pregnant animals breathe
creosote, it may cause harmful effects to the baby.
Animals fed large amounts of wood creosote had convulsions and died,
while those fed lower levels had liver and kidney problems.
How likely is creosote to cause cancer?
Long-term exposure, especially direct contact with skin during wood
treatment or manufacture of coal tar creosote-treated products, to low
levels of creosote has resulted in skin cancer and cancer of the
scrotum. Cancer of the scrotum in chimney sweeps has been associated
with long-term skin exposure to soot and coal tar creosotes. Animal
studies have also shown skin cancer from skin exposure to coal tar
products.
The International Agency for Research on Cancer (IARC) has determined
that coal tar creosote is probably carcinogenic to humans. The EPA has
also determined that coal tar creosote is a probable human carcinogen.
Is there a medical test to show whether I've been exposed to creosote?
There is no medical test to determine if you have been exposed to
creosote. However, some chemicals found in coal tar products can be
found/measured in body tissues. Urine tests are commonly done for
employees in industries that work with coal tar creosote, coal tar and
coal tar pitch.
This test isn't available at most doctors' offices, but can be done at
special laboratories that have the right equipment. These tests can
confirm that you have been exposed to chemicals found in coal tar
creosote and other coal tar products, but cannot predict whether you
will experience any health effects.
Has the federal government made recommendations to protect human health?
The EPA requires that spills or accidental releases into the
environment of 1 pound or more of creosote be reported to the EPA.
The Occupational Safety and Health Administration (OSHA) has set an
exposure limit of 0.2 milligrams of coal tar pitch volatiles per
cubic meter of air (0.2 mg/m3) in the workplace during
an 8-hour workday, 40-hour workweek. The American Conference of
Governmental Industrial Hygienists (ACGIH) recommends the same level
for coal tar pitch volatiles. The National Institute for
Occupational Safety and Health (NIOSH) recommends a maximum level of
0.1 mg/m3 of coal tar pitch volatiles for a 10-hour
workday, 40-hour workweek.
Glossary
Carcinogenic: = Ability to cause cancer
CAS: = Chemical Abstracts Service
Insecticide: = A substance that kills insects
Pesticide: = A substance that kills pests
Volatile: (Adjective) = Easily changed into a vapour or a gas
Volatile: (noun) = Short for "Volatile Substance"
This information is taken from the 1996 Toxicological Profile for
Creosote produced by the Agency for Toxic Substances and Disease
Registry, Public Health Service, U.S. Department of Health and Human
Services, Public Health Service in Atlanta, GA.
Written... May/June 2000,
Revised... 28 January 2002,
Revised... 24 April 2003,
