Answer:
Dear
Ereny,
Thallium
and its compounds are extremely toxic.
Exposure
to them should not exceed 0.1 mg per m2 of skin in an 8-hour time-weighted
average (40-hour work week).
Thallium
is a suspected human carcinogen but the Department of Health and Human
Services, the International
Agency
for Research on Cancer, and the Environmental Protection Agency (EPA)
have not classified thallium as to its human carcinogenicity.
Birth
defects were not reported in the children of mothers exposed to low
levels from eating vegetables and fruits contaminated with thallium.
Studies
in rats, however, exposed to high levels of thallium, showed adverse
developmental effects
