ARCHIVED REPORTS XR0008208 - Laserfiche WebLink

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• OWN TYPICAL PERCENTAGES (BY WEIGHT) OF THESE CONSTITUENTS IN GASOLINE ARE: BENZENE - 0. 1Z-3.502, TOLUENE - .7^a-til .8E'�Y., meta XYLENE - 1.77-3.87X, para XYLENE - 0.77-1 .58X, ortho XYLENE - GJ.69-2.686X, AND ETHYL BENZENE - U.ZG-2.86X. TYPICAL PERCENTAGE OF TETRAETHYL LEAD IS NOT AVAILABLE. UNITS USED TO DESCRIBF OCCUPATIONAL. EXPOSURES TO HAZARDOUS SUBSTANCES INCLUDE: EXPOSURE LIMIT, ALSO KNOWN AS THE "THRESHOLD LIMIT VALUE" (TLV) , CEILING LIMIT, AND THE CONCENTRATION LEVEL THAT IS "IMMEDIATELY DANGEROUS TO LIFE AND HEALTH" ( IDLH) . THE DEFINES THE (MAXIMUM CONCENTRATION OF A SUBSTANCE TO WHICH ONE CAN BE EXPOSED DURING AN 8 HOUR PERIOD SWITHOUT SUFFERING SIGNIFICANT HEALTH EFFECTS. THE THE CONCENTRATION LEVEL THAT CANNOT BE EXCEEDED AT ANY TIME; i.e. , A SUITABLE RESPIRATOR MUST BE WORN IF CONCENTRATION VALUES REACH THE CEILING LIMIT. THE J H�., L LE XL. REPRESENTS A MAXIMUM CONCENTRATION FROM WHICH ONE COULD ESCAPE WITHIN 30 MINUTES OF RESPIRATOR FAILURE WITHOUT EXPERIENCING ESCAPE-IMPAIRMENT OR IRREVERSIBLE HEALTH DAMAGE. IDLH VALUES ARE NOT LISTED FOR SUBSTANCES THAT ARE POTENTIAL HUMAN CARCINOGENS. EXPOSURE TABLE SUBSTANCE EXPOSURE LIMIT CEILING LIMIT IDLH $ .. BENZENE U. lppm (Stirs ) 1ppm t15min ) CARCINOGEN TOLUENE IoQppm t lOhrs) 2ooppm (10min) 2000ppm XYLENE looppm t8hrs) 200ppm f1Umin) IVuVppm ETHYL BENZENE 100ppm (8hrs) N.A. 20u(-)ppm TETRAETHYL LEAD 0.00E7PPM N.A. 3.6ppm PROLONGED EXPOSURES TO CONCENTRATIONS ABOVE THE LIMITS NOTED MAY AFFECT THE CENTRAL NERVOUS SYSTEM, CARDIOVASCULAR SYSTEM, RESPIRATORY SYSTEM, EYES, SKIN, KIDNEYS, BONES AND BONE MARROW. RESEARCH HAS SHOWN THAT BENZENE IS A KNOWN CARCINOGEN. IMMEDIATE SYMPTOMS OF OVER--EXPOSURE INCLUDE: EYE IRRITATION, NOSE AND THROAT IRRITATION, HEADACHE, NAUSEA, DIZZINESS, DROWSINESS, WEAKNESS, CONFUSION, EUPHORIA, EXCITEMENT, STAGGERED GAIT, ABDOMINAL PAIN, RESPIRATORY DIFFICULTIES, MUSCLE FATIGUE, AND COMA.