UVA, UVB and UVC, the three wavelength groups of ultraviolet light found in sunlight and in varying amounts in artificial light from such devices as sun lamps and sun beds, will be reviewed for possible listing in the federal government's Tenth Annual Report on Carcinogens, National Toxicology Program officials said today.

Additional substances to be considered for listing, according to the announcement, are:

• The fire retardant chemicals 2,2-bis-bromomethylpropanediol and 2,3-dibromo-1-propanol, as well as vinyl bromide, a chemical used in the making of flame-retardant synthetic fibers.
• Vinyl fluoride, used in the production of plastics.
• Two classes of dyes used in textiles, leather, plastic, paper, plastics and rubber: the dimethoxybenzidine dyes and the dimethylbenzidine dyes.
• Styrene-7,8-oxide, used in preparing fragrances and in some epoxy resins.
• IQ, a substance found in cooked meat and fish.
• Beryllium and beryllium compounds, which will be reviewed for possible upgrading to "known human carcinogens" from the current listing as "reasonably anticipated to be human carcinogens."

In an announcement in the Federal Register, the National Toxicology Program requested public comment and data relevant to the substances to be submitted to:

Dr. C. W. Jameson,
NTP Report on Carcinogens,
PO Box 12233,
Research Triangle Park, NC
27709.

Two federal government reviews ? the first by scientists of the National Institute of Environmental Health Sciences, where the NTP is headquartered, and the second by scientists from a group of federal agencies -- are followed by an outside peer review, held in public.

The Report on Carcinogens is a Congressionally directed listing of known and reasonably anticipated hum
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Contact: Bill Grigg
grigg@niehs.nih.gov
301-402-3378
NIH/National Institute of Environmental Health Sciences
19-May-1999