National Toxicology Program

National Toxicology Program

Public Comments: 1997-1999


Public comments for reviews prior to the 12th RoC have been archived. Request a list or copy of archived public comments for the following substances by emailing (or use our contact form).

1997 Nominations

  • 1,3-Butadiene
  • Cadmium and Cadmium Compounds
  • Chloroprene
  • Dyes Metabolized to Benzidine
  • Phenolphthalein
  • Saccharin
  • Smokeless Tobacco
  • Solar Radiation & Exposure to Sunlamps or Sunbeds
  • Strong Inorganic Acid Mists Containing Sulfuric Acid
  • Tamoxifen
  • 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
  • Tetrafluoroethylene
  • Tobacco Smoking
  • Trichloroethylene

1998 Nominations

  • Alcoholic Beverage Consumption
  • Boot & Shoe Manufacturing
  • Diesel Exhaust Particulates
  • Environmental Tobacco Smoke
  • Ethyl Acrylate
  • Ethylene Oxide
  • Isoprene
  • Methyl-t-Butyl Ether (MtBE)
  • Nickel and Nickel Compounds
  • Silica, Crystalline (Respirable Size)
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.