CHEMICAL IDENTIFICATION
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RTECS NUMBER :
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UX1050000
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CHEMICAL NAME :
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Pyrocatechol
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CAS REGISTRY NUMBER :
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120-80-9
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BEILSTEIN REFERENCE NO. :
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0471401
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LAST UPDATED :
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199712
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DATA ITEMS CITED :
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75
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MOLECULAR FORMULA :
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C6-H6-O2
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MOLECULAR WEIGHT :
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110.12
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WISWESSER LINE NOTATION :
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QR BQ
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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260 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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Rodent - rat
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DOSE/DURATION :
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110 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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260 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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68 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 - mouse
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DOSE/DURATION :
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247 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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Mammal - dog
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DOSE/DURATION :
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130 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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40 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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Mammal - cat
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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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Oral
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SPECIES OBSERVED :
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Rodent - rabbit
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DOSE/DURATION :
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200 mg/kg
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TOXIC EFFECTS :
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Behavioral - altered sleep time (including change in righting reflex) Blood - leukopenia 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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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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800 mg/kg
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TOXIC EFFECTS :
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Skin and Appendages - primary irritation (after topical exposure) Nutritional and Gross Metabolic - weight loss or decreased weight gain
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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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225 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 - guinea pig
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DOSE/DURATION :
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210 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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Intraperitoneal
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SPECIES OBSERVED :
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Rodent - guinea pig
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DOSE/DURATION :
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150 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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Rodent - guinea pig
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DOSE/DURATION :
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200 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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160 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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Parenteral
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SPECIES OBSERVED :
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Amphibian - frog
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DOSE/DURATION :
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160 mg/kg
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TOXIC EFFECTS :
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Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - convulsions or effect on seizure threshold
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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 - species unspecified
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DOSE/DURATION :
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240 mg/kg
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TOXIC EFFECTS :
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Behavioral - changes in motor activity (specific assay) Behavioral - muscle contraction or spasticity Lungs, Thorax, or Respiration - dyspnea
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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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Bird - chicken
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DOSE/DURATION :
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98 gm/kg/4W-I
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TOXIC EFFECTS :
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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 - rat
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DOSE/DURATION :
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437 gm/kg/2Y-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic 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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Oral
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SPECIES OBSERVED :
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Rodent - mouse
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DOSE/DURATION :
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645 gm/kg/96W-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic 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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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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60640 mg/kg/24W-C
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TOXIC EFFECTS :
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Tumorigenic - neoplastic 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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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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349 gm/kg/2Y-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic 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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Oral
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SPECIES OBSERVED :
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Rodent - rat
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DOSE/DURATION :
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171 gm/kg/51W-C
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TOXIC EFFECTS :
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Tumorigenic - Carcinogenic 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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Oral
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DOSE :
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1 gm/kg
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SEX/DURATION :
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female 11 day(s) after conception
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TOXIC EFFECTS :
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Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)
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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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Subcutaneous
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DOSE :
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5 mg/kg
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SEX/DURATION :
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female 1 day(s) pre-mating
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TOXIC EFFECTS :
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Reproductive - Maternal Effects - ovaries, fallopian tubes
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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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Micronucleus test
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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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Mutation test systems - not otherwise specified
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TEST SYSTEM :
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Rodent - rabbit Bone marrow
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REFERENCE :
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AJIMD8 American Journal of Industrial Medicine. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.1- 1980- Volume(issue)/page/year: 7,485,1985 *** REVIEWS *** ACGIH TLV-Animal 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-TWA 23 mg/m3 (5 ppm) (skin) 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: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: 15,155,1977 IARC Cancer Review:Human No Adequate Data 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: 15,155,1977 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: 7,56,1987 TOXICOLOGY REVIEW MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 47,75,1978 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-BELGIUM:TWA 5 ppm (23 mg/m3) JAN 1993 OEL-DENMARK JAN 1993 OEL-FINLAND:TWA 5 ppm (22 mg/m3);STEL 10 ppm (45 mg/m3) JAN 1993 OEL-FRANCE:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 5 ppm (20 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 5 ppm (23 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 5 ppm (20 mg/m3) 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 CATECHOL-air:10H TWA 5 ppm (Sk) 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 - M1763 No. of Facilities: 147 (estimated) No. of Industries: 4 No. of Occupations: 6 No. of Employees: 642 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1763 No. of Facilities: 700 (estimated) No. of Industries: 8 No. of Occupations: 15 No. of Employees: 13516 (estimated) No. of Female Employees: 5799 (estimated)
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