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- W4254143517 abstract "Diethylethanolamine (DEEA), an industrial anticorrosive additive, was evaluated in rats for its potential toxicity. A 2-week inhalation exposure to 10 ppm revealed no signs of toxicity. At 56 ppm, rats exhibited signs of nasal irritation and corneal opacities. Significant mortality (males, 90% females, 50%) occurred at 301 ppm. Histopathology revealed inflammatory cell infiltrations of the nasal turbinate mucosa and squamous metaplasia after exposure to 56 ppm. In the 14-week subchronic study, rats were exposed to 0, 11, 25, or 76 ppm. During exposure to DEEA, transient signs of mild to moderate respiratory irritation (noises or rales) were observed with a frequency and severity that was dose dependent. These signs usually cleared within 1 hr post-exposure. However, at 76 ppm some rats continued to exhibit these respiratory signs overnight. There were no significant DEEA-induced changes in either blood chemistry or neurobehavioral parameters. Nasal cavities of rats exposed to 25 or 76 ppm revealed evidence of inflammatory cell infiltration, focal hyperplasia, and squamous metaplasia in the respiratory epithelium of the anterior nasal turbinates. Hypertrophic goblet cells, focal necrosis, and exudate in the nasal lumen were also seen at 76 ppm. DEEA vapors failed to produce persistent ocular or respiratory tract toxicity below 26 ppm. The no-observed-effect-level in this study was 10 ppm." @default.
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- W4254143517 date "1992-01-01" @default.
- W4254143517 modified "2023-09-26" @default.
- W4254143517 title "Evaluation of the Inhalation Toxicity of Diethylethanolamine (DEEA) in Rats" @default.
- W4254143517 doi "https://doi.org/10.1093/toxsci/18.3.418" @default.
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