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Ecotoxicological information

Toxicity to microorganisms

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Reference
Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test (Carbon and Ammonium Oxidation))
GLP compliance:
yes (incl. QA statement)
Key result
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
>= 242.5 - <= 283.19 mg/L
Conc. based on:
test mat.
Basis for effect:
inhibition of heterotrophic respiration
Validity criteria fulfilled:
no
Conclusions:
The EC50 value, total, heterotrophic and nitrification respiration inhibition of Indole is 264.34, 242.45 and 283.19 mg/L.
Executive summary:

The EC50value,total, heterotrophic and nitrification respiration inhibition of Indole is 264.34, 242.45 and 283.19 mg/L.

Description of key information

Key value for chemical safety assessment

EC50 for microorganisms:
242.45 mg/L

Additional information