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Material Safety Data Sheet KIREVRON Asphalt Cement AR-4000 CPS 241343 ADDITIONAL HEALTH DATA No association has been established between industrial exposure to petroleum asphalt and cancer in humans. The International Agency for Research on Cancer (IARC) has recently reviewed the carcinogenic potential of asphalts. They concluded that there was insufficient evidence that undiluted, air-refined asphalt was carcinogenic to animals, while there was only limited evidence that steam-refined asphalts were carcinogenic to animals. Additionally there was insufficient evidence to conclude that asphalts were carcinogenic to human beings. Studies in which mice were exposed to a variety of whole asphalts did not result in any increased cancer rate; mice exposed to asphalts diluted with hydrocarbon solvents had increased incidence of certain types of cancer. Brief or intermittent skin contact with this asphalt product is not expected to produce any serious effects. While normal handling of this product is not likely to cause cancer in humans, skin contact and breathing of mists, fumes or vapors should be reduced to a minimum. We strongly recommend that the precautions outlined in this MSDS be followed when handling this material. Some asphalts contain sulfur compounds which may form H2S when heated. The rotten eggs odor of H2S is unreliable as an indicator of concentration because it may be entirely masked by the odor of the asphalt. Signs and symptoms of overexposure to H2S include scespiratory tract irritation, headaches, dizziness, nausea, gastrointestinal disturbances, Loughing, a sensation of dryness and pain in the nose, throat and chest, confusion and unconsciousness. H2S concentrations of 1000-2000 ppm can be extremely hazardous. Death has occurred following exposure to 600 ppm. SPECIAL PRECAUTIONS DO NOT USE OR STORE near flame, sparks or hot surfaces. USE ONLY IN WELL VENTILATED AREA. Keep container closed. Toxic quantities of hydrogen sulfide (H2S) may be present in storage tanks and bulk transport vessels which contain or have contained hot asphalt. Persons opening or entering these compartments should first determine if H2S is present. See Special Protective Information. DO NOT ATTEMPT RESCUE WITHOUT WEARING APPROVED SUPPLIED-AIR OR self-contained breathing equipment. DO NOT ADD OR ALLOW WATER TO MIX WITH HOT ASPHALT. Steam generated eruptions may occur. STORE AND TRANSPORT ASPHALT ONLY IN PROPERLY VENTED CONTAINERS. Combustion of asphalt and asphalt vapors may occur. DO NOT MISHANDLE ASPHALT EQUIPMENT. Observe manufacturer's ,guidelines on proper equipment use. An ignition source should be considered present in large tan};s where asphalt is stored at temperatures above 350°F. Deposits can form in the vapor space of large asphalt tanks which may ignite as low as 350°F. Pyrophoric iron sulfide, commonly present in such tanks, may cause ignition below 350°F.