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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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)

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