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0 <br /> PEL/STELADLH Known <br /> Task(s) Chemical Signs/Symptoms <br /> (soil, water, air, etc.) Concentration <br /> 200 ppm Ceiling tremor, somnolence, nausea, <br /> IDLH 1,000 ppm vomiting; dermatitis; cardiac <br /> arrhythmia, paresthesia; liver <br /> damage; potential occupational <br /> carcinogen <br /> Tetrachloroethene PEL-OSHA 100 ppm Irritation of eyes/nose/throat; <br /> (PCE) 200 ppm Ceiling nausea; flush face/neck; vertigo, <br /> 300 ppm (5-min max dizziness, incoordination; <br /> in any 3 hrs) headaches, somnolence; skin <br /> IDLH 150 ppm erythema; liver damage; <br /> potential occupational <br /> carcinogen <br /> 1,1,1 Trichloroethane PEL 350 ppm Irritation of eyes/skin; <br /> (1,1,1-TCA) IDLH 700 ppm headaches, lassitude, central <br /> nervous system depressant, <br /> poor equilibrium; dermatitis; <br /> cardiac arrhythmias; liver <br /> damage <br /> 1,1-Dichloroethene PEL-OSHA none Irritation of eyes/skin/throat; <br /> (1,1-DCE) (previously 1 ppm) dizziness, headaches, nausea; <br /> IDLH N.D. dyspnea (breathing difficulty); <br /> liver/kidney disfunction; <br /> pneutits; potential occupational <br /> carcinogen <br /> 1,1-Dichloroethane PEL-OSHA 100 ppm Irritation of skin; liver/kidney <br /> (1,1-DCA) IDLH 4,000 ppm disfunction; depression of the <br /> central nervous system <br /> Dichlorodifluoro PEL-OSHA 1,000 ppm Dizziness, tremors, <br /> methane IDLH 50,000 ppm unconsciousness, cardiac <br /> (Freon 12) arrhythmia, cardiac arrest <br /> 1,1 dichloro- <br /> 1-fluoroethane <br /> (Freon 141 b) <br /> 1,1,2 trichloro-1,2,2 <br /> trifluoroethane <br /> (Freon 113) <br /> Trichlorofluoro <br /> methane <br /> (Freon 1 1) <br /> Acetone PEL-NIOSH 250 ppm Irritation of eyes/nose/throat; <br /> PEL-OSHA 1,000 ppm headaches, dizziness, central <br /> IDLH 2,500 ppm nervous system depressant; <br /> dermatitis <br /> Methane TWA 1,000 ppm At high concentrations methane <br /> acts as an asphyxiant without <br /> other adverse effects. <br />