CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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YQ8650000
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CHEMICAL NAME :
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Uracil
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CAS REGISTRY NUMBER :
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66-22-8
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LAST UPDATED :
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199701
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DATA ITEMS CITED :
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19
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MOLECULAR FORMULA :
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C4-H4-N2-O2
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MOLECULAR WEIGHT :
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112.10
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WISWESSER LINE NOTATION :
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T6MVMVJ
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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>6 gm/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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>8 gm/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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1513 mg/kg
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TOXIC EFFECTS :
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Behavioral - somnolence (general depressed activity) Behavioral - changes in motor activity (specific assay)
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Mammal - dog
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DOSE/DURATION :
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>5 gm/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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LD50 - Lethal dose, 50 percent kill
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rabbit
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DOSE/DURATION :
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>10 gm/kg
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TOXIC EFFECTS :
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Details of toxic effects not reported other than lethal dose value
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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131 gm/kg/2Y-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Kidney, Ureter, Bladder - tumors Kidney, Ureter, Bladder - Kidney tumors
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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1905 gm/kg/96W-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Kidney, Ureter, Bladder - tumors
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TYPE OF TEST :
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TD - Toxic dose (other than lowest)
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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378 gm/kg/30W-C
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Kidney, Ureter, Bladder - tumors
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TYPE OF TEST :
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TD - Toxic dose (other than lowest)
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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454 gm/kg/36W-C
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Kidney, Ureter, Bladder - tumors
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TYPE OF TEST :
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TD - Toxic dose (other than lowest)
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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235 gm/kg/20W-C
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Kidney, Ureter, Bladder - tumors
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TYPE OF TEST :
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TD - Toxic dose (other than lowest)
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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189 gm/kg/15W-C
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Kidney, Ureter, Bladder - tumors
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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18 gm/kg
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SEX/DURATION :
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female 17-22 day(s) after conception lactating female 21 day(s) post-birth
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TOXIC EFFECTS :
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Reproductive - Specific Developmental Abnormalities - blood and lymphatic systems (including spleen and marrow) Reproductive - Specific Developmental Abnormalities - urogenital system Reproductive - Effects on Newborn - behavioral
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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15400 mg/kg
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SEX/DURATION :
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female 7-17 day(s) after conception
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TOXIC EFFECTS :
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Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
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TYPE OF TEST :
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TDLo - Lowest published toxic dose
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ROUTE OF EXPOSURE :
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Oral
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DOSE :
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616 mg/kg
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SEX/DURATION :
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female 7-17 day(s) after conception
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TOXIC EFFECTS :
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Reproductive - Effects on Newborn - sex ratio
MUTATION DATA
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TEST SYSTEM :
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Rodent - mouse
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DOSE/DURATION :
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15 mg/kg
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REFERENCE :
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NULSAK Nucleus (Calcutta). (Dr. A.K. Sharma, Centre of Advanced Studies in Cell and Chromosome Research, Calcutta, 35 Baliygunge Circular Rd., Calcutta 700 019, India) V.1- 1958- Volume(issue)/page/year: 19,40,1976 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X9246 No. of Facilities: 737 (estimated) No. of Industries: 6 No. of Occupations: 13 No. of Employees: 5593 (estimated) No. of Female Employees: 2969 (estimated)
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