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EC number: 200-772-0
CAS number: 72-17-3
SY-83 was tested for lts acute inhalation toxicity. Male and female F344
rats were exposed to a concentration of approxinately 7.94 mg/L for 4
hours. Rapid breathing and eye tearing were observed during exposure. At
one and three hours after exposure, all animnals (including the sham
controls) had a hunched posture, ruffled and ungroomed fur, brown
stained fur and red-stained fur surrounding the eyes (tearing). By 24
hours,female treated rats had ruffled and stained coats. All other
animals appeared normal at 24 hours and for the remainder of the 14 day
observation period. Several treated female rats continued to have
ruffled fur up to 4 days after exposure. One female rat from the treated
group died on Day 9. All other animals survived until the end ofthe
study. Based on these results,the LC50 of SY-83 is greater than 7.94
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