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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

No data are available for Chlorotrimethylsilane. A 96-hour LC50 of 271 mg/L has however been determined for the effects of a read-across substance, Trimethylsilanol (CAS 1066 -40 -6), on mortality of Oncorhynchus mykiss.  A NOEC of 128 mg/L has been determined in the same test.

Key value for chemical safety assessment

Additional information

No test data for short-term toxicity to fish are available for Chlorotrimethylsilane, However a study of short-term toxicity to fish is available for the related substance Trimethylsilanol. Trimethylsilanol (CAS 1066-40-6) is the hydrolysis product of Chlorotrimethylsilane 75-77-4. The hydrolysis half-life of chlorotrimethylsilane (see Section 5.1.2) indicates that, under conditions relevant to the short-term fish toxicity test, hydrolysis to trimethylsilanol and hydrogen chloride will occur over the course of the test. Effects of hydrogen chloride on aquatic organisms are limited to those that result from changes to pH in unbuffered media and are discussed in the CSR.