Tetrachloroethylene vs. Perchloroethylene — What's the Difference?

Tetrachloroethylene, also known under the systematic name tetrachloroethene, or perchloroethylene, and many other names (and abbreviations such as "perc" or "PERC", and "PCE"), is a chlorocarbon with the formula Cl2C=CCl2 . It is a colorless liquid widely used for dry cleaning of fabrics, hence it is sometimes called "dry-cleaning fluid".

A colorless, nonflammable chlorocarbon, C2Cl4, used in dry-cleaning solutions and as an industrial solvent.

Perchloroethylene.

(organic compound) tetrachloroethylene, a nonflammable, non-polar solvent with low toxicity, especially in the dry-cleaning trade

A chlorocarbon with the formula C₂Cl₄, often used in dry cleaning

Anthelmintic agent used against hookworm and other nematodes