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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

Toxicity to microorganisms: 3hr EC50 >100 mg/l (activated sludge respiration inhibition, OECD 209) for read-across substance trichloro(vinyl)silane.

Key value for chemical safety assessment

Additional information

No reliable data are available for the toxicity to microorganisms of trichloro(ethyl)silane. A toxicity to microorganisms study is, however, available for the related substance trichloro(vinyl)silane. It is considered appropriate to read across the toxicity to microorganisms result for trichloro(vinyl)silane because it is considered a close structural analogue of trichloro(ethyl)silane. Both trichloro(ethyl)silane and trichloro(vinyl)silane will hydrolyse rapidly under conditions relevant to microbial toxicity assessment, to similar hydrolysis products, ethylsilanetriol and vinylsilanetriol, respectively. The other hydrolysis product is HCl. Effects of hydrogen chloride on microorganisms are limited to those that result from changes to pH in unbuffered media.