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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 3 h EC50>1000 mg/l; NOEC >=1000 mg/l (OECD 209)

Key value for chemical safety assessment

Additional information

A 3 hour EC50 >1000 mg/l and NOEC ≥1000 mg/l (OECD 209) were determined for phenyl silsesquioxanes (EC No. 939-487-8) in an activated sludge respiration inhibition (ASRI) reliable study conducted according to an appropriate test protocol, and in compliance with GLP.