Registration Dossier
Registration Dossier
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EC number: 218-320-6 | CAS number: 2116-84-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Short-term toxicity to algae: 72 h ErC50 >2.2 µg/L and NOEC: =2.2 µg/L (geometric mean measured, highest concentration tested).
Key value for chemical safety assessment
Additional information
A 72-hour EC50 value of >2.2 µg/L and NOEC of =2.2 µg/L (geometric mean measured, highest concentration tested) (guideline OECD 201) have been determined for the effects of the analogous/structurally related substance decamethyltetrasiloxane (L4, CAS 141-62-8) on growth rate of Pseudokirchneriella subcapitata. In view of the static regime of the test, and the neutral pH for the first two days of the test, it is likely that the test organisms will have been exposed, predominantly, to the parent substance.
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