16-nitroviolanthrene-5,10-dione

Toxicity to microorganisms

Administrative data

Endpoint:

activated sludge respiration inhibition testing

Type of information:

other: read across from similar substance

Adequacy of study:

weight of evidence

Study period:

1989

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1989

Report date:

1989

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test

GLP compliance:

yes

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:

anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione

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:

no

Total exposure duration:

180 min

Test conditions

Test temperature:

20°C

Nominal and measured concentrations:

40, 128, 400 mg/L

Reference substance (positive control):

yes

Remarks:

3,5-dichlorophenol

Results and discussion

Effect concentrations

Key result

Duration:

3 h

Dose descriptor:

EC10

Effect conc.:

> 400 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

inhibition of total respiration

Results with reference substance (positive control):

Inhibition >90% at 100 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Conclusions:

The test item was not inhibitory on activated sludge respiration in an OECD 209 test. The 3h-EC10 was found to be >400 mg/L.