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EC number: 218-320-6
CAS number: 2116-84-9
There are no reliable aquatic toxicity data available for
tris(trimethylsiloxy)phenylsilane (CAS 2116-84-9) therefore good quality
data for the structurally-related substance decamethyltetrasiloxane (L4,
CAS 141-62-8) have been read across.
The requirement for conducting a short-term test with Daphnia has
been waived on the basis that there are reliable read-across long-term
toxicity data available with invertebrates.
A reliable toxicity test result is available for algae (Pseudokirchneriella
subcapitata) read-across from decamethyltetrasiloxane (L4, CAS
141-62-8). The relevant short-term values are:
Algae: EC50 (72 h): >2.2 µg/l (>0.0022 mg/l); NOEC: =2.2 µg/l
(=0.0022 mg/l) determined for the effects of decamethyltetrasiloxane on
growth rate of the freshwater algae Pseudokirchneriella subcapitata,
based on geometric mean measured concentrations.
Toxicity to fish: A 45-day NOEC of =4.4 µg/l has been determined for the
effects of the registration substance on mortality and behaviour of Lepomis
macrochirus. The results are expressed relative to mean measured
concentrations of the substance and were obtained as part of a
flow-through test that was undertaken to determine the potential for
bioconcentration of the substance from water to fish. Because this is a
bioconcentration factor test rather than a guideline-compliant long-term
fish toxicity test, the results are used only as supporting data.
Toxicity to invertebrates:
A reliable toxicity test result is available for Daphnia magna
read-across from decamethyltetrasiloxane (L4, CAS 141-62-8). The
relevant long-term value is: 21-day NOEC value of =4.9 µg/l based on
adult mortality, reproduction and growth of Daphnia magna under
flow-through conditions and expressed relative to mean measured
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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