TABLE 1

Cancer and noncancer toxicity values for TCE and PCE

TCEaPCEb
Cancer riskEffectKidney cancer (human), adjusted for liver/hematopoietic cancer riskHepatocellular tumors (mouse)
Oral slope factor5 × 10−2 per mg/kg-day2 × 10−3 per mg/kg-day
Inhalation unit risk2 × 10−2 per ppm2 × 10−3 per ppm
Noncancer riskEffectCardiac malformations (mouse), immunologic effects (mouse), developmental immunotoxicity (mouse), toxic nephropathy (rat)Visuospatial deficits (human)
RfD5 × 10−4 mg/kg-day6 × 10−3 mg/kg-day
RfC4 × 10−4 ppm5.8 × 10−3 ppm
  • a US EPA, 2011b.

  • b US EPA, 2011a.