Violanthrene-5,10-dione

Toxicity to microorganisms

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

Test material information

Constituent 1

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).