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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 (hexamethyldisiloxane): 3 hour ASRI NOEC 100mg/l; EC50 >100 mg/l (OECD 209)

Key value for chemical safety assessment

Additional information

Three reliable studies are available for toxicity to microorganisms.

Two reliable studies are ASRI (activated sludge respiration inhibition) studies. The key study (Mayer 2001) was chosen as the most recent study. This study gave a result of NOEC (3 h) ≥100 mg/l; EC50>100 mg/l.