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National Toxicology Program Studies of Cellulose Insulation

Daniel L. Morgan, Cynthia S. Smith, Yin-Fong Su, Jeffrey A. Dill and R. Bruce Westerberg


 
ABSTRACT

Cellulose insulation (CI) was selected for study by the NTP based upon production volume, the potential for widespread human exposure, and a lack of toxicity data. Preliminary studies are in progress to determine the feasibility of conducting toxicity studies of CI in animals. Because there are insufficient data available to evaluate the potential hazards of occupational exposure to CI, a workplace exposure assessment is being conducted through an interagency agreement with the National Institute of Occupational Safety and Health (NIOSH). This study was designed to characterize the atmosphere to which workers are exposed during CI installation. The NTP is also conducting studies to characterize the size distribution of particles and fibers, and the chemical composition of bulk CI provided by four manufacturers. These results will help determine the feasibility of conducting inhalation studies of CI in animals.



Reprinted from Proceedings of the 1999 Beltwide Cotton Conferences pp. 153 - 156
©National Cotton Council, Memphis TN

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Document last modified Monday, Jun 21 1999