*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : EC1750000
CHEMICAL NAME           : Biuret, 1-ethyl-1-nitroso-
CAS REGISTRY NUMBER     : 32976-88-8
BEILSTEIN REFERENCE NO. : 1781616
REFERENCE               : 2-04-00-00617 (Beilstein Handbook Reference)
LAST UPDATED            : 199612
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : C4-H8-N4-O3
MOLECULAR WEIGHT        : 160.16
WISWESSER LINE NOTATION : ZVMVN2&NO
COMPOUND DESCRIPTOR     : Tumorigen
                          Reproductive Effector
SYNONYMS/TRADE NAMES :
   * ENBU
   * Ethylnitrosobiuret
   * N-Ethyl-N-nitrosobiuret
   * N-Nitroso-N-ethylbiuret
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1050 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   IARCCD IARC Scientific Publications.  (Geneva, Switzerland)  No.1-26,
   1971-78.  For publisher information, see IAPUDO.  Volume(issue)/page/year:
   4,45,1973
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 400 mg/kg
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Gastrointestinal - tumors
REFERENCE :
   ZKKOBW Zeitschrift fuer Krebsforschung und Klinische Onkologie.  (Berlin,
   Fed. Rep. Ger.)  V.76-92, 1971-78.  For publisher information, see JCROD7.
   Volume(issue)/page/year: 76,45,1971
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 100 mg/kg
                          female 22 day(s) after conception
TOXIC EFFECTS :
   Tumorigenic - Carcinogenic by RTECS criteria
   Reproductive - Tumorigenic effects - transplacental tumorigenesis
   Brain and Coverings - tumors
REFERENCE :
   IARCCD IARC Scientific Publications.  (Geneva, Switzerland)  No.1-26,
   1971-78.  For publisher information, see IAPUDO.  Volume(issue)/page/year:
   4,45,1973
 
TYPE OF TEST            : TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 100 mg/kg
                          female 15 day(s) after conception
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Reproductive - Tumorigenic effects - transplacental tumorigenesis
   Brain and Coverings - tumors
REFERENCE :
   ZKKOBW Zeitschrift fuer Krebsforschung und Klinische Onkologie.  (Berlin,
   Fed. Rep. Ger.)  V.76-92, 1971-78.  For publisher information, see JCROD7.
   Volume(issue)/page/year: 76,45,1971
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 300 mg/kg
SEX/DURATION            : female 14 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
   IARCCD IARC Scientific Publications.  (Geneva, Switzerland)  No.1-26,
   1971-78.  For publisher information, see IAPUDO.  Volume(issue)/page/year:
   4,45,1973
 
                            *** END OF RECORD ***