Registration Dossier
Registration Dossier
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EC number: 204-171-4 | CAS number: 117-08-8
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The respiration of activated sludge was unaffected by 3-h exposure to tetrachlorophthalic anhydride at nominal concentrations between 100 and 10000 mg/L. An EC10 and an EC50 of >10000 mg/l were obtained in this test. The effect values relate to nominal concentrations, since no analytical monitoring was performed.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 10 000 mg/L
- EC10 or NOEC for microorganisms:
- 10 000 mg/L
Additional information
"Should read: > 10000 mg/L"
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