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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

OECD 216 Test Proposal

Key value for chemical safety assessment

Additional information

No soil microorganisms toxicity data are available with triethoxy(3-thiocyanatopropyl)silane (CAS 34708-08-2).

Toxicity was observed in the aquatic microorganism test (3 hour EC50 130 mg/L; EC10 4.3 mg/L (activated sludge respiration inhibition)). ECHA guidance Chapter R.7c states “Where inhibition of sewage sludge microbial activity has been observed in Annex VIII testing, a test on soil microbial activity will additionally be necessary for a valid PNEC to be derived.” A soil microorganisms nitrogen inhibition test (OECD 216) is therefore also proposed.

An OECD 216 study is proposed with the registration substance.