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Iva <br /> N,MIM <br /> CHEVRON Regular Gasoline Page 10 of 10 <br /> occurred. Malformations have not been reported following inhalation <br /> exposure. Because of the very high levels of exposure used in these <br /> ` studies, we do not believe that their results imply an increased risk of <br /> reproductive toxicity to workers exposed to xylene levels at or below the <br /> exposure standard. <br /> Xylene has given negative results in several mutagen testing assays ' <br /> including the Ames assay. In a cancer study sponsored by the. National <br /> Toxicology Program (NTP) , technical grade xylene gave no evidence of <br /> carcinogenicity in rats or mice dosed daily for two years. <br /> rw � <br /> Whole gasoline exhaust was reviewed by the International Agency for <br /> Research on Cancer (IARC) in their Monograph Volume 46 (1989). Evidence <br /> W.. for causing cancer was considered 'inadequate in animals and inadequate in <br /> humans. IARC placed this material in Category 2H, considering it possibly <br /> carcinogenic to humans. <br /> **Y*ft*7t***Y�titY*A*YeYYYYYtr**4t**Y*!***YY�cY#St**Y*YYYit*�Y***Y***YleskYtkf*** <br /> w <br /> The above information is based on the data of which we are aware and is <br /> believed to be correct as of the date hereof. Since the information <br /> contained herein may be applied under conditions beyond our control and <br /> with which we may be unfamiliar and since data made available subsequent <br /> to the date hereof may suggest modification of the information, we da not <br /> assume any responsibility for the results of its use. This information is <br /> Furnished upon condition that the person receiving it shall wake his on <br /> _.� determination of the suitability of the material for his particular <br /> purpose. <br /> r-1 <br /> r <br /> Revision Humber: 13 Revision Date: D3/24/90 Y.SDS Humber: 000363 <br /> NDA — No Data Available NA — Not Applicable <br />