CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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YS5000000
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CHEMICAL NAME :
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Urea, 1-(2-chloroethyl)-3-(4-methylcyclohexyl)-1-nitroso-
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CAS REGISTRY NUMBER :
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13909-09-6
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LAST UPDATED :
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199510
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DATA ITEMS CITED :
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44
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MOLECULAR FORMULA :
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C10-H18-Cl-N3-O2
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MOLECULAR WEIGHT :
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247.76
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WISWESSER LINE NOTATION :
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L6TJ AMVNNO&2G D1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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Rinsed with water
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ROUTE OF EXPOSURE :
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Administration onto the skin
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SPECIES OBSERVED :
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Rodent - rabbit
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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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Human
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DOSE/DURATION :
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90 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - nausea or vomiting Blood - leukopenia Blood - thrombocytopenia
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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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Human
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DOSE/DURATION :
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6 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - nausea or vomiting Blood - leukopenia Blood - thrombocytopenia
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Human - child
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DOSE/DURATION :
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5550 mg/kg/30W-I
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TOXIC EFFECTS :
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Kidney, Ureter, Bladder - changes in both tubules and glomeruli
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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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Human - child
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DOSE/DURATION :
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37950 mg/kg/2Y-I
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TOXIC EFFECTS :
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Kidney, Ureter, Bladder - changes in both tubules and glomeruli
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Subcutaneous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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100 mg/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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49900 ug/kg
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TOXIC EFFECTS :
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Behavioral - changes in motor activity (specific assay) Behavioral - withdrawal
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TYPE OF TEST :
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LD10 - Lethal Dose
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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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37 mg/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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Unreported
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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30 mg/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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LDLo - Lowest published lethal dose
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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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25 mg/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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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Intravenous
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SPECIES OBSERVED :
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Mammal - dog
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DOSE/DURATION :
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14 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - hypermotility, diarrhea Blood - agranulocytosis Nutritional and Gross Metabolic - body temperature decrease
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TYPE OF TEST :
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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Oral
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SPECIES OBSERVED :
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Primate - monkey
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DOSE/DURATION :
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100 mg/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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LDLo - Lowest published lethal dose
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ROUTE OF EXPOSURE :
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Intravenous
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SPECIES OBSERVED :
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Primate - monkey
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DOSE/DURATION :
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45 mg/kg
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TOXIC EFFECTS :
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Gastrointestinal - hypermotility, diarrhea Blood - changes in bone marrow (not otherwise specified) Blood - other changes
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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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Human
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DOSE/DURATION :
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22 mg/kg/60W-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Blood - leukemia
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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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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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30 mg/kg/7W-I
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Lungs, Thorax, or Respiration - tumors Skin and Appendages - 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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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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32 mg/kg/60W-I
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - 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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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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117 mg/kg/26W-I
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Blood - leukemia Blood - lymphoma, including Hodgkin's disease
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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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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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64 mg/kg/60W-I
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - 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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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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127 mg/kg/60W-I
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Brain and Coverings - tumors Gastrointestinal - 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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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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203 mg/kg/48W-I
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TOXIC EFFECTS :
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Tumorigenic - equivocal tumorigenic agent by RTECS criteria Lungs, Thorax, or Respiration - tumors Gastrointestinal - 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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Human - woman
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DOSE/DURATION :
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73 mg/kg/3Y-I
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Blood - leukemia
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TYPE OF TEST :
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Micronucleus test
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TYPE OF TEST :
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Micronucleus test
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TYPE OF TEST :
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Unscheduled DNA synthesis
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TYPE OF TEST :
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DNA inhibition
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TYPE OF TEST :
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DNA inhibition
MUTATION DATA
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TYPE OF TEST :
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DNA damage
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TEST SYSTEM :
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Mammal - species unspecified Lymphocyte
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DOSE/DURATION :
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2 mmol/L
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REFERENCE :
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CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year: 44,1887,1984 *** REVIEWS *** IARC Cancer Review:Animal Limited Evidence IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,150,1987 IARC Cancer Review:Human Sufficient Evidence IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,150,1987 IARC Cancer Review:Group 1 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,150,1987 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X1943 No. of Facilities: 8 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 229 (estimated) No. of Female Employees: 82 (estimated)
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