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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:
2 (reliable with restrictions)
Reference:
Composition 1
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
yes
Test material information:
Composition 1
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 or LC50 for microorganisms:
1 000 mg/L

Additional information

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