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EC number: 220-778-7
CAS number: 2896-70-0
Invertebrates are the most sensitive species with respect to the toxic
effects of 2,2,6,6-tetramethyl-4-oxopiperidinooxy with an acute LC50of
74 mg/L. A long term study is available for this
species, a No Observed Effect Level of 2.3 mg/L was derived. Based on
the results from the long term study it was concluded that no
environmental classification was required according to Regulation (EC)
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