CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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YR6250000
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CHEMICAL NAME :
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Urea
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CAS REGISTRY NUMBER :
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57-13-6
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LAST UPDATED :
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199710
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DATA ITEMS CITED :
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43
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MOLECULAR FORMULA :
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C-H4-N2-O
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MOLECULAR WEIGHT :
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60.07
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WISWESSER LINE NOTATION :
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ZVZ
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
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TYPE OF TEST :
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Standard Draize test
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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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Human
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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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8471 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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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - rat
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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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Subcutaneous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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8200 mg/kg
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TOXIC EFFECTS :
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Behavioral - altered sleep time (including change in righting reflex) Behavioral - changes in motor activity (specific assay) Behavioral - antipsychotic
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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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Intravenous
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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5300 mg/kg
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TOXIC EFFECTS :
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Behavioral - altered sleep time (including change in righting reflex) Behavioral - changes in motor activity (specific assay) Behavioral - antipsychotic
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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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Intratracheal
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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567 mg/kg
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TOXIC EFFECTS :
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Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - dyspnea Blood - methemoglobinemia-carboxyhemoglobin
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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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11 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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LDLo - Lowest published 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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6608 mg/kg
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TOXIC EFFECTS :
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Behavioral - convulsions or effect on seizure threshold Behavioral - coma
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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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Subcutaneous
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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9200 mg/kg
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TOXIC EFFECTS :
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Behavioral - altered sleep time (including change in righting reflex) Behavioral - changes in motor activity (specific assay) Behavioral - antipsychotic
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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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Intravenous
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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4600 mg/kg
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TOXIC EFFECTS :
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Behavioral - altered sleep time (including change in righting reflex) Behavioral - changes in motor activity (specific assay) Behavioral - antipsychotic
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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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Mammal - dog
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DOSE/DURATION :
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3 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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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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3 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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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 - rabbit
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DOSE/DURATION :
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3 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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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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Rodent - rabbit
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DOSE/DURATION :
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4800 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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Subcutaneous
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SPECIES OBSERVED :
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Bird - pigeon
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DOSE/DURATION :
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14800 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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Subcutaneous
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SPECIES OBSERVED :
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Amphibian - frog
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DOSE/DURATION :
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600 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 - domestic
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DOSE/DURATION :
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511 mg/kg
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TOXIC EFFECTS :
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Behavioral - tetany Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands
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TYPE OF TEST :
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TCLo - Lowest published toxic concentration
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ROUTE OF EXPOSURE :
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Inhalation
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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288 mg/m3/17W-I
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TOXIC EFFECTS :
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Kidney, Ureter, Bladder - other changes in urine composition Blood - other changes Nutritional and Gross Metabolic - changes in chlorine
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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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Administration onto the skin
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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3024 mg/kg/4W-C
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TOXIC EFFECTS :
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Liver - changes in liver weight Endocrine - changes in thymus weight Related to Chronic Data - changes in testicular weight
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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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Administration onto the skin
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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37800 mg/kg/25W-C
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TOXIC EFFECTS :
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Brain and Coverings - changes in brain weight Related to Chronic Data - changes in prostate weight
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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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821 gm/kg/1Y-C
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TOXIC EFFECTS :
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Tumorigenic - neoplastic by RTECS criteria Blood - tumors Blood - lymphoma, including Hodgkin's disease
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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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394 gm/kg/1Y-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic by RTECS criteria Blood - tumors Blood - lymphoma, including Hodgkin's disease
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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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Intraplacental
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DOSE :
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1400 mg/kg
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SEX/DURATION :
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female 16 week(s) after conception
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TOXIC EFFECTS :
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Reproductive - Fertility - abortion
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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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Intraplacental
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DOSE :
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1600 mg/kg
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SEX/DURATION :
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female 16 week(s) after conception
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TOXIC EFFECTS :
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Reproductive - Fertility - abortion
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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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Intraplacental
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DOSE :
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1600 mg/kg
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SEX/DURATION :
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female 16 week(s) after conception
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TOXIC EFFECTS :
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Reproductive - Fertility - abortion
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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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Intrauterine
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DOSE :
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6 gm/kg
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SEX/DURATION :
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female 18 week(s) after conception
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TOXIC EFFECTS :
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Reproductive - Fertility - abortion
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TYPE OF TEST :
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Cytogenetic analysis
MUTATION DATA
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TYPE OF TEST :
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Cytogenetic analysis
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TEST SYSTEM :
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Rodent - hamster Lung
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DOSE/DURATION :
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13 gm/L
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REFERENCE :
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GMCRDC Gann Monograph on Cancer Research. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) No. 11- 1971- Volume(issue)/page/year: 27,95,1981 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80231 No. of Facilities: 22367 (estimated) No. of Industries: 156 No. of Occupations: 119 No. of Employees: 284911 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7915 No. of Facilities: 9 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 63 (estimated) No. of Female Employees: 9 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80231 No. of Facilities: 31269 (estimated) No. of Industries: 204 No. of Occupations: 164 No. of Employees: 783504 (estimated) No. of Female Employees: 326824 (estimated)
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