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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer reviewed data cited in EU risk assessment report comparable to guideline study with acceptable restrictions

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Consecutive system of tests for assessment of the effects of chemical agents in the aquatic environment
Author:
Adema D.M.M., Kuiper J., Hanstveit A.O., Canton H.H.
Year:
1982
Bibliographic source:
Pestic. Chem. 3, 537-544
Reference Type:
review article or handbook
Title:
2,4-Dichloranilin; 2,5-Dichloranilin; 3,4-Dichloranilin
Author:
Beratergremium für umweltrelevante Altstoffe (BUA)
Year:
1994
Bibliographic source:
Wissenschaftliche Verlagsgesellschaft, BUA report 140
Reference Type:
review article or handbook
Title:
European Union Risk Assessment Report: 3,4-dichloraniline (3,4-DCA), Vol. 65
Author:
European Chemicals Bureau
Year:
2006
Bibliographic source:
EU RAR: 3,4-dichloraniline (3,4-DCA), Vol. 65; EUR 22235 EN ISSN 1018-5593

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
purity: no data

Sampling and analysis

Analytical monitoring:
not specified

Test organisms

Test organisms (species):
Scenedesmus pannonicus

Study design

Test type:
static
Water media type:
freshwater
Total exposure duration:
96 h

Test conditions

Test temperature:
20 °C
Details on test conditions:
constant light

Results and discussion

Effect concentrationsopen allclose all
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
1 mg/L
Basis for effect:
growth rate
Duration:
96 h
Dose descriptor:
EC50
Effect conc.:
4.8 mg/L
Basis for effect:
growth rate

Applicant's summary and conclusion

Executive summary:

Adema et al (1982), Pestic. Chem. 3, 537 -455

The EC50 (96 h) for growth inhibition of the freshwater algae Scenedesmus pannonicus determined according to OECD Guideline 201 was determined to be 4.8 mg/L. Furthermore, the NOEC was determined to be 1 mg/L.