CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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CZ4500000
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CHEMICAL NAME :
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Benzene, o-dichloro-
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CAS REGISTRY NUMBER :
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95-50-1
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LAST UPDATED :
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199712
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DATA ITEMS CITED :
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69
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MOLECULAR FORMULA :
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C6-H4-Cl2
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MOLECULAR WEIGHT :
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147.00
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WISWESSER LINE NOTATION :
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GR BG
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 into the eye
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SPECIES OBSERVED :
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Rodent - rabbit
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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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500 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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LCLo - Lowest published lethal 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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821 ppm/7H
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TOXIC EFFECTS :
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Behavioral - general anesthetic Liver - hepatitis (hepatocellular necrosis), zonal Sense Organs and Special Senses (Eye) - lacrimation
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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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840 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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Subcutaneous
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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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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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4386 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 - mouse
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DOSE/DURATION :
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1228 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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Rodent - mouse
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DOSE/DURATION :
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400 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 - rabbit
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DOSE/DURATION :
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500 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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Administration onto the skin
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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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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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250 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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Rodent - guinea pig
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DOSE/DURATION :
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2 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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LCLo - Lowest published lethal concentration
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ROUTE OF EXPOSURE :
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Inhalation
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SPECIES OBSERVED :
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Rodent - guinea pig
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DOSE/DURATION :
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800 ppm/24H
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TOXIC EFFECTS :
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Liver - hepatitis (hepatocellular necrosis), diffuse
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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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27300 ug/kg/39W-I
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TOXIC EFFECTS :
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Kidney, Ureter, Bladder - other changes in urine composition Blood - agranulocytosis Blood - changes in erythrocyte (RBC) count
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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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3 gm/kg/10D-I
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TOXIC EFFECTS :
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Liver - changes in liver weight Endocrine - changes in spleen weight Blood - changes in leukocyte (WBC) count
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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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32500 mg/kg/13W-I
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TOXIC EFFECTS :
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Liver - changes in liver weight Endocrine - changes in spleen weight Blood - changes in erythrocyte (RBC) count
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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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7 gm/kg/14D-I
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TOXIC EFFECTS :
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Liver - fatty liver degeneration Related to Chronic Data - death
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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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32500 mg/kg/13W-I
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TOXIC EFFECTS :
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Liver - changes in liver weight Endocrine - changes in spleen weight
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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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DOSE :
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200 ppm/6H
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SEX/DURATION :
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female 6-15 day(s) after conception
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TOXIC EFFECTS :
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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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Intraperitoneal
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DOSE :
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50 mg/kg
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SEX/DURATION :
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male 1 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count)
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TYPE OF TEST :
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Sperm Morphology
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TYPE OF TEST :
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Micronucleus test
MUTATION DATA
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TYPE OF TEST :
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Sister chromatid exchange
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TEST SYSTEM :
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Rodent - hamster Ovary
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REFERENCE :
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SCIEAS Science. (American Assoc. for the Advancement of Science, 1333 H St., NW, Washington, DC 20005) V.1- 1895- Volume(issue)/page/year: 236,933,1987 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-STEL 301 mg/m3 (50 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 150 mg/m3 (25 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 7,231,1974 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 7,231,1974 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 29,213,1982 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 29,213,1982 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,192,1987 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 MSHA STANDARD:air-CL 50 ppm (300 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,76,1971 OSHA PEL (Gen Indu):CL 50 ppm (300 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):CL 50 ppm (300 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):CL 50 ppm (300 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):CL 50 ppm (300 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-AUSTRIA:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-BELGIUM:STEL 50 ppm (301 mg/m3);Skin JAN 1993 OEL-DENMARK:STEL 50 ppm (300 mg/m3) JAN 1993 OEL-FINLAND:TWA 50 ppm (300 mg/m3);STEL 75 ppm (450 mg/m3);Skin JAN 1993 OEL-FRANCE:STEL 50 ppm (300 mg/m3) JAN 1993 OEL-GERMANY:TWA 50 ppm (300 mg/m3);Skin JAN 1993 OEL-HUNGARY:TWA 50 mg/m3;STEL 100 mg/m3;Skin JAN 1993 OEL-JAPAN:STEL 50 ppm (300 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-POLAND:TWA 20 mg/m3 JAN 1993 OEL-RUSSIA:STEL 50 mg/m3 JAN 1993 OEL-SWEDEN:STEL 50 ppm (300 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 50 ppm (300 mg/m3);STEL 100 ppm (600 mg/m3) JAN 1993 OEL-THAILAND:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-TURKEY:TWA 50 ppm (300 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 50 ppm (300 mg/m3);STEL 50 ppm JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO o-DICHLOROBENZENE-air:CL 50 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 24003 No. of Facilities: 8838 (estimated) No. of Industries: 83 No. of Occupations: 69 No. of Employees: 72149 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 24003 No. of Facilities: 10577 (estimated) No. of Industries: 59 No. of Occupations: 59 No. of Employees: 92246 (estimated) No. of Female Employees: 12686 (estimated)
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