It is a halogenated hydrocarbon product. A fluid industrially used in dry cleaning, oil and stain removal. Appropriate ventilation is required to keep TLV-TWA less than 50 ppm (339mg/m3).It is irritant to skin and mucous surfaces, and a CNS depressant substance. Accidentally occurring exposure is very dangerous to the mother (TLV-STEL must be less than 200 ppm=1357mg/m3). In case of such exposure, the mother should stop nursing the baby for the next 15 days (a case of one infant who developed severe jaundice after having been nursed by a recent exposed women). It is worth to test levels on breast milk.