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:r <br /> SUBSTANCE EXPOSURE LIMIT CEILING LIMIT IDLH <br /> BENZENE 0 .1ppm Mrs) Ippm (15min) CARCINOGEN <br /> TOLUENE 1.00ppm (10hrs) 200ppm (10min) 2000ppm <br /> XYLENE 100ppm (8hrs) 200ppm (10min,) 1000ppm <br /> ETHYL BENZENE 100ppm (8hrs) N.A. 2000ppm <br /> TETRAETHYL LEAD 0.0067PPM N.A. 3 . 6ppm <br /> PROLONGED EXPOSURES TO CONCENTRATIONS ABOVE THE LIMITS NOTED MAY <br /> . AFFECT THE CENTRAL NERVOUS SYSTEM, CARDIOVASCULAR SYSTEM, <br /> RESPIRATORY SYSTEM, EYES, SKIN, KIDNEYS, BONES AND BONE MARROW. <br /> RESEARCH HAS SHOWN THAT BENZENE IS A KNOWN CARCINOGEN. <br /> IMMEDIATE SYMPTOMS OF OVER-EXPOSURE INCLUDE: EYE, NOSE AND THROAT <br /> IRRITATION, HEADACHE, NAUSEA, DIZZINESS, DROWSINESS, WEAKNESS, <br /> CONFUSION, EUPHORIA, EXCITEMENT, STAGGERED GAIT, ABDOMINAL PAIN, <br /> RESPIRATORY DIFFICULTIES, MUSCLE FATIGUE, AND COMA. <br /> -:_ :• page 6 <br />