*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : RQ7525000
CHEMICAL NAME           : 2-Oxetanone, 3,3-dimethyl-
CAS REGISTRY NUMBER     : 1955-45-9
BEILSTEIN REFERENCE NO. : 1280648
REFERENCE               : 5-17-09-00032 (Beilstein Handbook Reference)
LAST UPDATED            : 199710
DATA ITEMS CITED        : 12
MOLECULAR FORMULA       : C5-H8-O2
MOLECULAR WEIGHT        : 100.13
WISWESSER LINE NOTATION : T4OVTJ C1 C1
COMPOUND DESCRIPTOR     : Tumorigen
                          Mutagen
SYNONYMS/TRADE NAMES :
   * 3,3-Dimethyl-2-oxetanone
   * 3,3-Dimethyl-2-oxethanone
   * Dimethyl propiolactone
   * 3,3-Dimethyl-beta-propiolactone
   * NCI-C04126
   * Pivalic acid lactone
   * Pivalolactone
 
                       *** 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           : 1470 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NCILB* Progress Report for Contract No. NIH-NCI-E-C-72-3252, Submitted to
   the National Cancer Institute by Litton Bionetics, Inc.  (Bethesda, MD)
   Volume(issue)/page/year: NCI-E-C-72-3252,1973
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 316 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NCILB* Progress Report for Contract No. NIH-NCI-E-C-72-3252, Submitted to
   the National Cancer Institute by Litton Bionetics, Inc.  (Bethesda, MD)
   Volume(issue)/page/year: NCI-E-C-72-3252,1973
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 216 gm/kg/2Y-I
TOXIC EFFECTS :
   Tumorigenic - Carcinogenic by RTECS criteria
   Gastrointestinal - tumors
REFERENCE :
   NCITR* National Cancer Institute Carcinogenesis Technical Report Series.
   (Bethesda, MD)  No.0-205. For publisher information, see NTPTR*.
   Volume(issue)/page/year: NCI-TR-140,1978
 
TYPE OF TEST            : TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 72 gm/kg/69W
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Gastrointestinal - tumors
REFERENCE :
   NCITR* National Cancer Institute Carcinogenesis Technical Report Series.
   (Bethesda, MD)  No.0-205. For publisher information, see NTPTR*.
   Volume(issue)/page/year: NCI-TR-140,1978
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 33300 ng/plate
REFERENCE :
   ENMUDM Environmental Mutagenesis.  (New York, NY)  V.1-9, 1979-87.  For
   publisher information, see EMMUEG.  Volume(issue)/page/year: 7(Suppl
   5),1,1985
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 333 ug/plate
REFERENCE :
   ENMUDM Environmental Mutagenesis.  (New York, NY)  V.1-9, 1979-87.  For
   publisher information, see EMMUEG.  Volume(issue)/page/year: 7(Suppl
   5),1,1985
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Serratia marcescens
DOSE/DURATION           : 25 mg/L
REFERENCE :
   ATXKA8 Archiv fuer Toxikologie.  (Berlin, Fed. Rep. Ger.)  V.15-31, 1954-74.
    For publisher information, see ARTODN.  Volume(issue)/page/year: 30,67,1972

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA Section 8(d) unpublished health/safety studies
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
   
   NCI Carcinogenesis Bioassay (gavage);clear evidence:rat
   NCITR* National Cancer Institute Carcinogenesis Technical Report Series.
   (Bethesda, MD)  No.0-205. For publisher information, see NTPTR*.
   Volume(issue)/page/year: NCI-TR-140,78

   NCI Carcinogenesis Bioassay (gavage);no evidence:mouse
   NCITR* National Cancer Institute Carcinogenesis Technical Report Series.
   (Bethesda, MD)  No.0-205. For publisher information, see NTPTR*.
   Volume(issue)/page/year: NCI-TR-140,78

 
                            *** END OF RECORD ***