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ateriai Safetybata •Sheet <br /> HEAVY OILS/RESIDUUM <br /> ADDITIONAL HEALTH DATA <br /> Signs and symptoms of respiratory tract irritation may include, but may not be limited to, <br /> one or more of the following, depending on concentration and length of exposure: nasal <br /> discharge, nosebleed, sore throat, coughing, bronchitis, pulmonary edema and difficulty in <br /> breathing. <br /> This material contains oils of varying composition which may contain significant amounts <br /> of polynuclear aromatic hydrocarbons (PNAs) . PNAs have been shown to cause skin cancer <br /> after prolonged or frequent contact with the skin of test animals. <br /> This material may also contain petroleum vacuum residuum which is similar to petroleum <br /> asphalt. Studies in which mice were exposed to a variety of whole asphalts did not result <br /> in any increased cancer rate but mice exposed to asphalts diluted with hydrocarbon <br /> solvents had increased incidence of certain types of cancer. Brief or intermittent skin <br /> contact with this asphalt-like material is not expected to produce any serious effects. <br /> While normal handling of this product is not likely to cause cancer in humans, skin <br /> contact and breathing of mists, fumes or vapors should be reduced to a minimum. We <br /> `^Y strongly recommend that the precautions outlined in this MSDS be followed when handling <br /> this material. <br /> 3 <br /> Rev. 1 03/06/86 <br />