Blogs

On September 28, 2011, the U.S. Environmental Protection Agency (EPA) issued its final guidance on the weight-of-evidence (WoE) (Final WoE Guidance) analysis that it will use to evaluate the results of data submitted in response to test orders issued for Tier 1 screening under the Endocrine Disruptor Screening Program (EDSP). This WoE analysis, in turn, will be used to determine what substances merit further study under Tier 2 as substances that have the potential to interact with the estrogen,...

Australia’s National Industrial Chemicals Notification and Assessment Scheme (NICNAS) announced on September 28, 2011, the availability of a review of the 2007-2009 literature on toxicological and health effects relating to six nanomaterials. NICNAS commissioned the review and analysis of literature concerning fullerenes, carbon nanotubes, and nanoforms of zinc oxide, titanium dioxide, cerium oxide, and silver. According to NICNAS, it chose these nanomaterials because it...

During the September 23, 2011, Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) conference organized by the European Chemicals Agency (ECHA) and European Commission (EC), Astrid Schomaker, Directorate-General (DG) Environment, stated that the EC has been working on a definition of nanomaterials, and that it “should be coming after the summer.” The EC previously stated in a letter to the Dutch Environment Ministry that it would publish a definition by the end of...

The Office of Environmental Health Hazard Assessment (OEHHA) has posted comments received on its July 29, 2011, revised proposed regulation concerning the specification of hazard traits, environmental and toxicological endpoints, and other relevant data that are to be included in California’s Toxics Information Clearinghouse.  The California Department of Toxic Substances Control (DTSC) will use information from the Clearinghouse to help identify chemicals of concern in consumer...

On September 22, 2011, during a meeting of nano interests in Washington, D.C., the following people spoke: Jeffrey Weiss, Senior Director, Technical Barriers to Trade, Office of the United States Trade Representative, “U.S. Trade Policy and Nanotechnology”; Richard A. Canady, Ph.D., Director, Center for Human Health Risk Assessment Research Foundation, International Life Sciences Institute (ILSI), “NanoRelease and NanoCharacter Projects”; and Maria J. Doa, Ph.D., Acting Director of...

The Silver Nanotechnology Working Group (SNWG) recently prepared a statement concerning nanosilver and its long history of safe and regulated use. SNWG notes the similarities between nanosilver and other antimicrobial silver materials available in the marketplace.  SNWG states that it “has interacted with the [U.S. Environmental Protection Agency (EPA)] in challenged exchanges on how best to regulate nanopesticides leading to a clear, reasonable, and responsible path for...

On September 18, 2011, Nature Nanotechnology posted an article entitled “Cell entry of one-dimensional nanomaterials occurs by tip recognition and rotation.” The authors state that materials with high aspect ratio, such as carbon nanotubes (CNT) and asbestos fibers, have been shown to cause length-dependent toxicity in certain cells because these long materials prevent complete ingestion, which frustrates the cell. The authors note that, while “[b]iophysical models have...

The German Advisory Council on the Environment (SRU) released on September 1, 2011, a report entitled Precautionary Strategies for Managing Nanomaterials, which makes recommendations for a “responsible and precautionary development” of nanotechnology. According to SRU, its objective is to allow for innovation while also identifying and reducing risks at an early stage. SRU concludes that while chemical, product, and environmental regulations are “generally applicable” to...

The August 25, 2011, issue of Nature includes a letter from Hermann Stamm, European Commission (EC) Joint Research Centre (JRC), Institute for Health and Consumer Protection (IHCP). In response to Andrew Maynard’s article entitled “Don’t define nanomaterials,” in the July 7, 2011, issue of Nature, Stamm argues that a definition of engineered nanomaterials for regulatory purposes is “urgently needed.” Maynard proposes that a “‘one size fits all’ definition of nanomaterials...

Earlier this month the Danish Environmental Protection Agency (DEPA) published a document entitled Survey on Basic Knowledge about Exposure and Potential Environmental and Health Risks for Selected Nanomaterials, which is intended to provide an overview of the existing knowledge about seven of the most common nanomaterials, their environmental and health properties, the use of those nanomaterials, and the possibility of exposure of humans and the environment.  DEPA selected fullerenes, iron,...