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EC number: 204-411-8
CAS number: 120-61-6
The average concentrations (over 58 exposures) of DMT in the high and
low level exposure chambers were (mean±SD) 86.5±11.0 mg/m³ and 16.5±2.2
mg/m³, respectively. No DMT was detected in the control chamber.
Male Long-Evans hooded rats were exposed repeatedly to dimethyl
terephthalate dust. Airborne particles of dimethyl terephthalate at
concentrations of 16.5 and 86.4 mg/m³ for 4 hours/day, 5 days/week for a
total of 58 exposures resulted in signs of irritation during the
exposure at the high concentration. No other toxicologically adverse
effects were observed. The respirable fraction of the total number of
aerodynamically sized particles (<5.0 µm) was 36%. Based on this
aerodynamic particle size value, the rats in the inhalation study
received calculated average doses of 4.0 and 0.7 mg/kg bw. The NOAEL
for this study can be considered to be 86.4 mg/m³.
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