Perchloroethylene (PERC): The Hidden Neurotoxin in Your Dry-Cleaned Clothes
Discover the risks of Perchloroethylene (PERC), a common dry cleaning solvent classified as a probable carcinogen and neurotoxin, and learn about safer dry cleaning methods.
Perchloroethylene (PERC) is the dominant solvent used in approximately 80% of conventional dry cleaning establishments. While effective for cleaning, PERC is a recognized neurotoxin, causing acute symptoms like dizziness, headaches, and impaired coordination upon inhalation. The U.S. Environmental Protection Agency (EPA) has classified PERC as a "probable human carcinogen," linking it to various cancers, including bladder and kidney cancer. Crucially, PERC can off-gas from freshly cleaned garments for days, meaning exposure continues even after items are brought home, posing a risk to indoor air quality.
What is Perchloroethylene (PERC)?
Perchloroethylene, often abbreviated as PERC, is a synthetic chlorinated hydrocarbon widely used as a solvent in the dry cleaning industry. Its ability to effectively dissolve fats, oils, and waxes without causing fabrics to shrink or lose shape made it the preferred chemical for decades. PERC is a volatile organic compound (VOC) with a distinctive chemical odor, often associated with the 'smell of dry cleaning'.
Despite its cleaning efficacy, PERC is a hazardous air pollutant and a known environmental contaminant. It can leach into groundwater and evaporate into the air, contributing to air pollution and posing risks to workers and communities near dry cleaning facilities.
The Invisible Dangers: Neurotoxicity and Carcinogenic Potential
Exposure to PERC, primarily through inhalation of its fumes, poses significant health risks:
Short-term exposure can lead to central nervous system effects such as dizziness, headaches, drowsiness, nausea, and impaired coordination, often described as a 'feeling of being drunk'. Chronic exposure has been linked to more severe neurological damage, including memory loss and mood disturbances.
The U.S. EPA and the International Agency for Research on Cancer (IARC) classify PERC as a "probable human carcinogen" (Group 2A). Studies suggest potential links to bladder cancer, kidney cancer, and non-Hodgkin lymphoma.
PERC can also cause damage to the liver and kidneys, and irritate the skin and respiratory tract.
A significant concern for consumers is the off-gassing of PERC from freshly dry-cleaned clothes, which can release the chemical into your home's air for days, contributing to indoor air pollution.
Seeking Safer Solutions: Alternatives to PERC Dry Cleaning
Fortunately, safer dry cleaning methods are increasingly available. Look for dry cleaners that advertise:
- Wet Cleaning: This professional process uses water, biodegradable detergents, and specialized equipment to safely clean 'dry clean only' garments without harsh chemicals.
- CO2 Cleaning: Using liquid carbon dioxide as a solvent, this method is non-toxic, non-flammable, and leaves no chemical residue or odor.
- Hydrocarbon Cleaning: While still a chemical solvent, hydrocarbon cleaners are generally considered less toxic and less regulated than PERC.
For items that can tolerate it, consider hand washing or using at-home dry cleaning kits, though always check the ingredients in these kits to ensure they don't contain other problematic chemicals. Ultimately, minimizing your reliance on conventional PERC dry cleaning is the best way to reduce exposure to this harmful chemical.
Better Alternatives
A convenient kit to refresh and de-wrinkle dry-clean-only clothes at home, typically without harsh solvents like PERC.
Safely cleans and freshens delicate clothes in your dryer, free from PERC and other harsh chemicals.
Designed for delicate dark fabrics that are often dry-cleaned, allowing for safe at-home washing instead.
Sources
- ATSDR: Perchloroethylene ToxFAQs — https://www.atsdr.cdc.gov/toxprofiles/tp18.pdf
- California Air Resources Board (CARB): Perchloroethylene and Dry Cleaning — https://ww2.arb.ca.gov/our-work/programs/perchloroethylene-dry-cleaning
- IARC Monographs: Perchloroethylene (Group 2A) — https://monographs.iarc.who.int/agents-classified-by-the-iarc-monographs/
Explore Connections
Dive deeper into related hazards, similar chemical profiles, or safe material equivalents.