|ID (ISN) del documento||58750|
|ISSN - Título de la serie
||1047-322X - Applied Occupational and Environmental Hygiene
|Número de serie
||Air concentrations of TDI and total reactive isocyanate group in three flexible polyurethane manufacturing facilities
||Oct. 1991, Vol.6, No.10, p.853-858. Illus. 15 ref.
||To study workers potentially exposed to toluene diisocyanate (TDI), surveys were conducted in two large facilities manufacturing molded flexible foam and one facility manufacturing and finishing flexible slab foam. The air sample results show that isocyanate concentrations differed from plant to plant and were probably dependent on the operations performed, engineering controls, and the physical layout of the plant. In the two molded foam facilities, many of the personal exposures were above 35µg/m3, the workshift air standard recommended by the National Institute for Occupational Safety and Health (NIOSH). Pouring line workers were generally more exposed than finishing workers. However, thermal degradation of foam can release toxic substances, including TDI, into the air. This was found to occur in some of the finishing operations. Throughout the facilities, the concentration of the 2,6-isomer was found usually to be at least as great as the 2,4-isomer. Total reactive isocyanate group was determined using NIOSH method 5505.
||poliuretano; isocianatos; exposición; espumas plásticas; toma de muestras del aire; diisocianato de toluileno
||muestreo individual; investigación de higiene del trabajo; límites admisibles; productos de pirolisis
|Tipo de documento
||D - Artículos periódicos
|País / Estado o Provincia||Estados Unidos|
||Química, hidrocarburos,plásticos, caucho
|Broad subject area(s)
|Navegación por categoria(s)