ARLINGTON, VaA scientific panel has recommended listing
nine substances as either known or reasonably
anticipated to be human carcinogens. If upheld after review,
the substances will be listed in the 10th Report on
Carcinogens, prepared by the National Toxicology Program (NTP)
and scheduled for publication in 2002.
The panel voted to upgrade beryllium and beryllium compounds
(substances used in fiber optics, aerospace, and other industrial
applications) from reasonably anticipated to
known human carcinogens. They recommended listing vinyl
bromide and vinyl fluoride as known human carcinogens.
Vinyl bromides primary use is in making flame-retardant
synthetic fibers. Vinyl fluoride is a chemical used in making
polyvinylfluoride, which is used in the plastics industry.
The panel also recommended listing two other chemicals used in make
products flame resistant as reasonable anticipated to be
human carcinogens: 2,2-bis-(bromomethyl)l-1,3-propanediol used in
unsaturated polyester resins, molded products, and rigid polyurethane
foam, and 2,3-dibromo-1-propanol, also found in pesticides and drug preparations.
Three other substances were cited as reasonably
anticipated to be human carcinogens: dimethylbenzidine dyes
used in some textiles and plastics; IQ, found in cooked meat and
fish; and styrene-7,8-oxide, use in preparing fragrances.