*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : HP5276500 CHEMICAL NAME : Dibenzofuran, 1,2,3,6,7,8-hexachloro- CAS REGISTRY NUMBER : 57117-44-9 LAST UPDATED : 199806 DATA ITEMS CITED : 5 MOLECULAR FORMULA : C12-H2-Cl6-O MOLECULAR WEIGHT : 374.84 SYNONYMS/TRADE NAMES : * F 121 * 1,2,3,6,7,8-Hexachlorodibenzofuran * 2,3,4,7,8,9-Hexachlorodibenzofuran *** HEALTH HAZARD DATA *** ** OTHER MULTIPLE DOSE TOXICITY DATA ** TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 1820 ug/kg/13W-C TOXIC EFFECTS : Liver - changes in liver weight Endocrine - changes in thymus weight Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases REFERENCE : CMSHAF Chemosphere. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.1- 1972- Volume(issue)/page/year: 17,973,1988 TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 910 ug/kg/13W-C TOXIC EFFECTS : Liver - changes in liver weight Endocrine - changes in thymus weight Nutritional and Gross Metabolic - weight loss or decreased weight gain REFERENCE : CMSHAF Chemosphere. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.1- 1972- Volume(issue)/page/year: 18,265,1989 *** REVIEWS *** IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 69,345,1997 *** STATUS IN U.S. *** EPA TSCA Section 8(d) unpublished health/safety studies EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998 *** END OF RECORD ***