Also known as: Chlorethylene, Chlorethene, Ethylene monochloride,
Chemical reference number (CAS): 75-01- 4
What is vinyl chloride?
Vinyl chloride is a colorless flammable gas that evaporates very quickly. Its
used to make polyvinyl chloride (PVC) pipes, wire coatings, vehicle upholstery, and
plastic kitchen ware. Higher than normal levels of vinyl chloride may be present inside
new cars as the chemical evaporates from new vinyl products.
Vinyl chloride can be formed in the environment when soil organisms break down
"chlorinated" solvents. In the environment, the highest levels of vinyl chloride
are found in air around factories producing vinyl products. Vinyl chloride that is
released by industries or formed by the breakdown of other chlorinated chemicals can enter
the air and drinking water supplies. Vinyl chloride is a common contaminant found near
How are people exposed to vinyl chloride?
Breathing: Most exposure to vinyl chloride occurs when people breathe
contaminated air. If a water supply is contaminated, vinyl chloride can enter household
air when the water is used for showering, cooking or laundry.
Drinking/Eating: People can be exposed to vinyl chloride if they drink
or cook with contaminated water.
Touching: Vinyl chloride can be absorbed through the skin. This can
occur when people handle vinyl products, contaminated soil, or bathe in contaminated
water. However, skin absorption is probably a minor route of exposure.
Do standards exist for regulating vinyl chloride?
Water: The state drinking water standard for vinyl chloride is 0.2
parts per billion (ppb). We suggest you stop drinking water containing more than 0.2 ppb.
If levels of vinyl chloride are above 2 ppb, avoid washing or bathing with it. You may
still use the water to flush toilets. Contact your local public health agency for more
information specific to your situation.
Air: No standards exist for regulating the amount of
vinyl chloride allowed in the air of homes. However, the Wisconsin
Department of Natural Resources (DNR) has set a residential indoor air
action level for vinyl chloride at 0.62 parts per billion by volume (ppbv).
The action level is considered to be protective of public health. Breathing
vinyl chloride for a lifetime at 0.62 ppbv is very unlikely to be harmful to
people. If vinyl chloride concentrations in air are above the action level,
we recommend taking an action to halt exposure.
Most people cannot smell vinyl chloride until the level is between 300
and 10,000 ppbv. If you can smell the chemical, the level is too high to be
The Wisconsin Department of Natural Resources regulates the amount of
vinyl chloride that can be released into outdoor ambient air by industries.
Will exposure to vinyl chloride result in harmful health
Vinyl chloride is very toxic. People should avoid contact with this chemical. The
following health effects can occur after several years of exposure to vinyl chloride:
- Damage to the nervous system
- Changes in the immune system
Cancer: Exposure to vinyl chloride may increase a person's risk of
developing cancer. Human and animal studies show higher rates of liver, lung and several
other types of cancer.
Reproductive Effects: People exposed to levels of 1,000,000 ppb or more in
air may have an increased risk of miscarriage and birth defects. Damage to male
sperm-producing organs has occurred in laboratory animals.
Organ Systems: Being exposed to vinyl chloride can affect a
persons liver, kidney, lung, spleen, nervous system and blood.
Bone: Long-term exposure to high levels of vinyl chloride can result
in a decrease in bone strength in fingers, arms, and joints.
In general, chemicals affect the same organ systems in all people who are exposed.
However, the seriousness of the effects may vary from person to person.
A person's reaction depends on several things, including individual health, heredity,
previous exposure to chemicals including medicines, and personal habits such as smoking or
drinking. It is also important to consider the length of exposure to the chemical; the
amount of chemical exposure; and whether the chemical was inhaled, touched, or eaten.
Can a medical test determine exposure to vinyl chloride?
Vinyl chloride can be found in urine and body tissues after recent exposures. However,
test results may not accurately reflect the level or duration of the exposure, or predict
future health effects. Function tests of bone marrow, liver, kidney, and nerves may be
useful in determining the effects of vinyl chloride exposure.
Seek medical advice if you have any symptoms that you think may be related to chemical
(P-44723 Revised 05/2012)
This fact sheet summarizes information about this chemical and is not a complete
listing of all possible effects. It does not refer to work exposure or emergency
Back to Toxic Chemical Fact Sheet