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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

A 48-hour EC50 value of 124 mg/l and NOEC of <60 mg/l (measured concentrations) have been determined for the effects of the silanol reaction product, trimethylsilanol, on mortality and mobility of Daphnia magna.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
124 mg/L

Additional information

No reliable data are available for the registration substance trimethylsilane (CAS 993-07-7). However, reliable test results are available for the silanol reaction product of the test substance, trimethylsilanol (CAS 1066-40-6), upon which the hazard assessment is based.

A 48-hour EC50 value of 124 mg/l and a NOEC of <60 mg/l (measured concentrations) have been determined for the effects of trimethylsilanol on mortality and mobility of Daphnia magna.