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Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Study period:
9-1997
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: done under GLP, study is complete
Qualifier:
according to guideline
Guideline:
other: OECD 209 and EEC directive 87/302/EEC
GLP compliance:
yes
Analytical monitoring:
no
Vehicle:
no
Test organisms (species):
activated sludge of a predominantly domestic sewage
Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
3 h
Reference substance (positive control):
yes
Remarks:
3,5-dichlorophenol
Duration:
3 h
Dose descriptor:
IC50
Effect conc.:
> 1 000 mg/L
Duration:
3 h
Dose descriptor:
NOEC
Effect conc.:
>= 1 000 mg/L
Validity criteria fulfilled:
yes
Conclusions:
study is valid, no effect observed

Description of key information

One OECD 209 GLP study is available with an 3 hr EC50 > 1000 mg/L (nominal)

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information