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Long-term toxicity to fish

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Long-term toxicity to fish: 60-d post-hatch NOEC ≥7.9 µg/l (time weighted mean measured) (highest concentration tested) (OECD 210), based on hatching, larval survival, abnormal appearance and behaviour in Oncorhynchus mykiss, read-across from an analogous/structurally related substance, decamethyltetrasiloxane (L4, CAS 141-62-8). 

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Additional information

A 60-d post-hatch NOEC of ≥7.9 µg/l (time weighted mean measured) has been determined for the effects of the analogous substance, decamethyltetrasiloxane (L4, CAS 141-62-8) on hatching, larval survival, abnormal appearance and behaviour in Oncorhynchus mykiss in the fish early-life stage test (OECD 210). In view of the exposure regime it is likely that the test organisms were exposed primarily to the tested substance rather than its degradation products.