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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
yes
Specific details on test material used for the study:
HMPPJC - Dark brown liquid
Test organisms (species):
activated sludge
Details on inoculum:
A mixed population of activated sewage sludge microorganisms
Test type:
flow-through
Total exposure duration:
3 h
Test temperature:
21 ºC
pH:
pH 7.4 buffered with sodium bicarbonate solution
Reference substance (positive control):
yes
Remarks:
3,5-dichlorophenol
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
> 1 000 mg/L
Conclusions:
EC50 (3 h) is > 1000 mg/l

Description of key information

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

Result EC50 (3hs contact time) >1000 mg/l