Isocyanates in Plastics Manufacturing.
Transactions of the Thirty-Sixth Annual Meeting of the American Conference of Governmental Industrial Hygienists, Miami Beach, Florida, May 12-17, 1974 1974:115-123
A study was undertaken of possible hazardous working conditions at an insulated container manufacturing facility. A sample population of 29 workers and seven comparisons was studied for possible exposure to toluene-diisocyanate (584849) (TDI). All measurements were well below the ceiling occupational health standard of 0.02 parts per million (ppm). Several members of the study population demonstrated symptoms such as mild asthma and hay fever like symptoms which generally did not result in reduced pulmonary function test results over the course of their work shift exposure. More severe symptoms were demonstrated by one individual and consisted of difficulty in breathing, chest tightness and congestion. A significant decrement in pulmonary function test results was demonstrated after one work shift in this individual during which exposure to low levels of TDI were recorded. The authors conclude that exposure to TDI at this facility was potentially hazardous for those employees who were sensitive. Whether these individuals became sensitive through past exposures to spills of foam materials or through long term exposures to low levels of TDI was not clear.
Isocyanates; Plastics-industry; Respiratory-system-disorders; Pulmonary-function-tests; Insulation-materials; Air-quality-monitoring; Occupational-exposure; Hypersensitivity;
Transactions of the Thirty-Sixth Annual Meeting of the American Conference of Governmental Industrial Hygienists, Miami Beach, Florida, May 12-17, 1974