*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : HP4430000
CHEMICAL NAME           : Dibenzofuran
CAS REGISTRY NUMBER     : 132-64-9
LAST UPDATED            : 199710
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C12-H8-O
MOLECULAR WEIGHT        : 168.20
COMPOUND DESCRIPTOR     : Mutagen
SYNONYMS/TRADE NAMES :
   * 2,2'-Biphenylene oxide
   * 2,2'-Biphenylylene oxide
   * Dibenzo(b,d)furan
   * Diphenylene oxide
 
                       *** HEALTH HAZARD DATA ***
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Sister chromatid exchange
TEST SYSTEM             : Rodent - hamster Ovary
DOSE/DURATION           : 10 mg/L
REFERENCE :
   EMMUEG Environmental and Molecular Mutagenesis.  (Alan R. Liss, Inc., 41 E.
   11th St., New York, NY 10003)  V.10-    1987-  Volume(issue)/page/year:
   10(Suppl 10),1,1987

         *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X2115
       No. of Facilities: 291 (estimated)
       No. of Industries: 4
       No. of Occupations: 4
       No. of Employees: 3292 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA Section 8(d) unpublished health/safety studies
   
   On EPA IRIS database
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***