Chlorinated Solvents
Methylene Chloride
This colorless, volatile liquid with a moderately sweet aroma is widely used as a solvent. Although it is not miscible with water, it is miscible with many organic solvents. It is widely used as a paint stripper and a degreaser. In the food industry, it has been used to decaffeinate coffee and tea as well as to prepare extracts of hops and other flavorings.[2] Its volatility has led to its use as an aerosol spray propellant and as a blowing agent for polyurethane foams.
Perchloroethylene
Perchloroethylene (also called PCE) is a colorless, nonflammable manmade liquid that evaporates when exposed to air and dissolves slightly in water. . More than 80% of the PCE produced is used in the dry cleaning industry.