*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : XP2100000
CHEMICAL NAME           : Thymine
CAS REGISTRY NUMBER     : 65-71-4
LAST UPDATED            : 199707
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C5-H6-N2-O2
MOLECULAR WEIGHT        : 126.13
WISWESSER LINE NOTATION : T6N CNJ BQ DQ E1
COMPOUND DESCRIPTOR     : Mutagen
SYNONYMS/TRADE NAMES :
   * 5-Methyluracil
   * 2,4(1H,3H)-Pyrimidinedione, 5-methyl-
   * Thymin (purine base)
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 3500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   JAPMA8 Journal of the American Pharmaceutical Association, Scientific
   Edition.  (Washington, DC) V.29-49, 1940-60.  For publisher information, see
   JPMSAE.  Volume(issue)/page/year: 44,56,1955
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 1 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   ANYAA9 Annals of the New York Academy of Sciences.  (New York Academy of
   Sciences, 2 E. 63rd St., New York, NY 10021)  V.1-    1877-
   Volume(issue)/page/year: 60,251,1954
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Phage inhibition capacity
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 1 gm/L
REFERENCE :
   ZAPOAK Zeitschrift fuer Allgemeine Mikrobiologie.  (Akademie-Verlag GmbH,
   Postfach 1233, Berlin DDR-1086 Ger. Dem. Rep.)  V.1-    1960-
   Volume(issue)/page/year: 12,583,1972

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X7246
       No. of Facilities: 437 (estimated)
       No. of Industries: 2
       No. of Occupations: 8
       No. of Employees: 4219 (estimated)
       No. of Female Employees: 2161 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA GENETOX PROGRAM 1988, Inconclusive: D melanogaster Sex-linked lethal
   
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***