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EPA magnifies oversight for nanotech products

By ASSOCIATED PRESS
Published November 24, 2006

WASHINGTON - Consumer products using extremely small particles of silver to kill germs will need Environmental Protection Agency approval, part of the government's first move to regulate the burgeoning nanotechnology industry.

The EPA said Wednesday it was changing federal policy to require that manufacturers provide scientific evidence that their use of nanosilver won't harm waterways or public health.

Environmentalists and others are concerned that after the material is discarded and enters the environment, it may be killing helpful bacteria and aquatic organisms or even pose a risk to humans.

Nanosilver is used to kill germs in shoe liners, food-storage containers, air fresheners, washing machines and other products.

Silver is among the most common type of nanomaterials marketed to consumers, of which more than 200 now exist, according to the Project on Emerging Nanotechnologies, which is funded by the Woodrow Wilson International Center for Scholars and the Pew Charitable Trusts.

But the EPA doesn't plan to oversee most nanomaterials, which can be as small as one-millionth the width of a head of a pin. The aim of nanotechnology, in the commercial world, is to develop new products and materials by changing or creating materials at the atomic and molecular level. But much of the impacts from those developments remain unknown.

The Food and Drug Administration also is considering whether to regulate nanotech products.

EPA officials decided a year ago that a major pesticide law, the Federal Insecticide, Fungicide and Rodenticide Act, should not apply to washing machines because they were considered devices. But after re-examining its decision and regulations, agency officials reversed course.

[Last modified November 24, 2006, 01:32:29]