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Toxicity to microorganisms

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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.