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California’s Prop 65 and Ethylbenzene Public Health Concerns


LA Testing provides analytical services to protect the public and help businesses comply with California’s Proposition 65.

Garden Grove, CA

In 1986, California voters approved an initiative to address increasing concerns about exposure to toxic chemicals. That initiative, the Safe Drinking Water and Toxic Enforcement Act of 1986, is better known by its original name of Proposition 65.

Proposition 65 requires businesses to notify Californians about significant amounts of chemicals in the products they purchase, in their homes or workplaces, or that are released into the environment. This list includes ethylbenzene, a colorless liquid that smells like gasoline. It occurs naturally in coal tar and petroleum and is also used in the petrochemical industry as an intermediate in the production of styrene.

According to the U.S. Environmental Protection Agency (EPA), “Acute (short-term) exposure to ethylbenzene in humans results in respiratory effects, such as throat irritation and chest constriction, irritation of the eyes, and neurological effects such as dizziness. Chronic (long-term) exposure to ethylbenzene by inhalation in humans has shown conflicting results regarding its effects on the blood. Animal studies have reported effects on the blood, liver, and kidneys from chronic inhalation exposure to ethylbenzene. Limited information is available on the carcinogenic effects of ethylbenzene in humans. In a study by the National Toxicology Program (NTP), exposure to ethylbenzene by inhalation resulted in an increased incidence of kidney and testicular tumors in rats, and lung and liver tumors in mice.” The EPA has classified ethylbenzene as a Group D, not classifiable as to human carcinogen.

“Ethylbenzene has been detected in urban air, indoor environments, in water and soils as well as due to occupational exposures,” reported Ben Sublasky, National Director of Client Services for LA Testing and EMSL Analytical, a leading environmental testing laboratory. “Even common household cleaning products can cause high levels of ethylbenzene in people’s homes,” he continued.

LA Testing provides environmental and exposure testing services for ethylbenzene. To learn more about Proposition 65 testing services please visit, email or call (800) 755-1794.

About LA Testing and EMSL Analytical, Inc.
LA Testing and EMSL Analytical are providers of environmental testing services and products to professionals and the general public. The companies have an extensive list of accreditations from leading organizations as well as state and federal regulating bodies.


 California Prop 65
 toxic chemicals exposure
 gasoline coal tar
 USEPA ethylbenzene
 blood liver kidneys

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