Dry Cleaning

Perchloroethylene and Dry Cleaning: It’s Time to Move the Industry to Safer Alternatives — NIH.gov

“The most commonly used chemical solvent for dry cleaning is perchloroethylene (tetrachloroethylene) otherwise known as “perc”. Also known as dry cleaning fluid, “perc” is a colorless, volatile, non-flammable, toxic chemical with a sweet smell. It cleans perfectly and does not degrade clothes. It is produced by chlorinolysis of light hydrocarbons using high temperatures. Its other uses include: degreasing of metals, in electric transformers as cooling gas, as one of the constituents of paint strippers, etc.”
— https://www.bucco.us/difference-organic-perk-dry-cleaning/

Perchloroethylene (PCE) in Dry Cleaning Establishments
Remy Newcombe, University of Idaho, Principles of Environmental Toxicology,
December 2000 (pdf)