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Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1989
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report date:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: OECD 302C with toxicity control
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Violanthrene-5,10-dione
EC Number:
204-152-0
EC Name:
Violanthrene-5,10-dione
Cas Number:
116-71-2
Molecular formula:
C34H16O2
IUPAC Name:
violanthrene-5,10-dione
Test material form:
solid

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
28 d

Test conditions

Nominal and measured concentrations:
30 mg/L

Results and discussion

Effect concentrations
Duration:
28 d
Dose descriptor:
NOEC
Effect conc.:
> 30 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of heterotrophic respiration

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
The substance was not found to be inhibitory on activated sludge respiration in an OECD 302C (toxicity control with 30 mg/L test substance and aniline as reference substance).

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