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EC number: 218-320-6
CAS number: 2116-84-9
Long-term toxicity to invertebrates: 21-d NOEC: =4.9 µg/l (measured;
highest concentration tested) read-across from the analogous/struturally
related substance decamethyltetrasiloxane (L4, CAS 141-62-8).
A 21-day EC50 of >4.9 µg/l and NOEC of =4.9 µg/l (measured,
highest concentration tested) (guideline OECD 211) have been determined
for the effects of the analogous/structurally related substance
decamethyltetrasiloxane (L4, CAS 141-62-8) on adult mortality,
reproduction and growth of Daphnia magna. In view of the use of
flow-through test conditions it is likely that the test organisms were
exposed primarily to the parent substance.
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