CIPP Industry Defends Styrene Use

Fed Dept. Seeks To Label Styrene As ‘Reasonably Anticipated Carcinogen’
By Jeff Griffin, Senior Editor | May 2011, Vol. 66 No. 5
Styrene. Image: Bill Abbott.

Informational Process Report from DHHS

Editor’s Note: The following “informational document” was provided by Linda Birnbaum, director of the National Institute of Environmental Health Sciences and National Toxicology Program on behalf of HHS Secretary Kathleen Sebelius. The document the process used to reach the decision to recommend classifying styrene as a reasonably anticipated human carcinogen.

Evaluation of Styrene for the Report on Carcinogens (RoC) by the National Toxicology Program (NTP)
The RoC is a scientific and public health document that provides information about the relationship between the environment and cancer. It is a congressionally mandated report that identifies agents, substances, mixtures, or exposures (collectively called "substances") that may pose a carcinogenic hazard for human health for people in the United States. Responsibility for preparation of the RoC has been delegated to the NTP.

The NTP has followed an established, multi-step process with multiple opportunities for public input to review styrene for the 12th RoC (http://ntp.niehs.nih.gov/go/29353). This process includes both public and inherently governmental steps. The NTP has set up a website for the 12th RoC that provides access to public information for the review of styrene (choose "S" at http://ntp.niehs.nih.gov/go/10091). In addition, the NTP has used existing listing criteria to evaluate the scientific evidence on styrene and reach a proposed listing recommendation for styrene as reasonably anticipated to be a human carcinogen. These criteria used by the NTP to fulfill the statutory obligation to publish the RoC have been in place for more than 13 years (61 Fed. Reg. 50499, September 26, 1996). They were the product of a thorough and public review and, since their publication, have remained unchanged despite being revisited periodically.