*** 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   EPA TSCA Section 8(d) unpublished health/safety studies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 ***