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Cal Baier-Anderson, Ph.D., is a Health Scientist.
Andrew Maynard, of the Project on Emerging Nanotechnologies, recently blogged about an Australian study that documented an odd effect of sunscreens containing nanoscale titanium dioxide (TiO2). The study was prompted by the observation that installers of metal roofs who used these sunscreens inadvertently transferred the product onto the roofs. In places where the workers’ skin had touched the painted metal surfaces, the paint showed accelerated weathering. Why? Because the particular type of nanoscale TiO2 in the sunscreen (the anatase crystal form) is photoactive – when it absorbs UV light, it releases free radicals that speed up the oxidation of the underlying paint.
Cal Baier-Anderson, Ph.D., is a Health Scientist.
Ah, summer! It’s a great time to be outdoors, enjoying the warm, sunny weather. Before you go outside, be sure to grab your sunscreen, that essential product that protects against skin cancer and sun damage. But which kind of sunscreen is best? There is a mesmerizing array of sunscreen options, but for our purposes let’s limit the question to one: Nano or not nano?
Scott Walsh, MBA, is a Project Manager.
Nanotechnology is a global phenomenon: Organizations all over the world are working to develop and deploy nanotechnology applications. Interest in minimizing the potential health, environmental and safety risks of nanotechnology is similarly global. One of many indications: Over the past year, EDF and DuPont’s Nano Risk Framework has been downloaded more than 3,000 times in nearly 100 countries.
Recognizing the international interest in the Framework, EDF and DuPont have now made it available in three major languages: Mandarin, French, and Spanish. (The Framework’s executive summary is also available in Portuguese.) These translations will allow organizations around the world to better understand and apply the Framework’s guidance to assess, mitigate, and communicate about potential nanomaterial risks.
Richard Denison, Ph.D., is a Senior Scientist.
[Links to posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5]
This final post in this series goes to the ultimate question, where the nanorubber really hits the road: Can EPA regulate an “existing” nanomaterial’s production, use, or disposal under TSCA? (more…)
Richard Denison, Ph.D., is a Senior Scientist.
[Links to posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5]
Let’s now turn to dissecting just how limited EPA’s authorities are both to collect information that companies already possess on their nanomaterials, and to require companies to generate and submit new information. (more…)
Richard Denison, Ph.D., is a Senior Scientist.
[Links to posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5]
This was going to be the last post in my series on the fate of nanomaterials under the Toxic Substances Control Act (TSCA), where I turn to what will likely be – at least in the near term – the most common regulatory scenario that will apply: the extent to which EPA has authority to regulate nanomaterials as “existing” chemicals under TSCA. But there’s so much to cover that I’ve decided to split this last topic into three separate posts. (more…)
