*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : YT5300000
CHEMICAL NAME           : Urea, 1,1'-isobutylidenedi-
CAS REGISTRY NUMBER     : 6104-30-9
BEILSTEIN REFERENCE NO. : 1908981
LAST UPDATED            : 199701
DATA ITEMS CITED        : 4
MOLECULAR FORMULA       : C6-H14-N4-O2
MOLECULAR WEIGHT        : 174.24
WISWESSER LINE NOTATION : ZVMX2&1&MVZ
COMPOUND DESCRIPTOR     : Tumorigen
SYNONYMS/TRADE NAMES :
   * Diureidoisobutane
   * 1,1-Diureidisobutane
   * IBDU
   * Isobutyldiurea
   * Isobutylenediurea
   * Isobutylidenediurea
   * 1,1'-Isobutylidenebisurea
   * Isodur
   * N,N''-(2-Methylpropylidene)bisurea
   * Urea, N,N''-(2-methylpropylidene)bis-,
 
                       *** HEALTH HAZARD DATA ***
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 64 gm/kg/20W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Lungs, Thorax, or Respiration - bronchiogenic carcinoma
   Skin and Appendages - tumors
REFERENCE :
   VPITAR Voprosy Pitaniya.  Problems of Nutrition.  (V/O Mezhdunarodnaya
   Kniga, 113095 Moscow, USSR) V.1-10, 1932-41; V.11-    1952-
   Volume(issue)/page/year: 37(2),72,1979
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 32 gm/kg/20W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Tumorigenic - tumor types after systemic administration not seen
   spontaneously
REFERENCE :
   VPITAR Voprosy Pitaniya.  Problems of Nutrition.  (V/O Mezhdunarodnaya
   Kniga, 113095 Moscow, USSR) V.1-10, 1932-41; V.11-    1952-
   Volume(issue)/page/year: 37(2),72,1979

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X4124
       No. of Facilities: 48 (estimated)
       No. of Industries: 1
       No. of Occupations: 2
       No. of Employees: 1252 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***