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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)

Data source

Reference
Reference Type:
review article or handbook
Title:
Reaxys no : 1914286
Year:
2011
Bibliographic source:
Reaxys by Elsevier Properties SA; Biodegradation; vol. 9; nb. 5; (1998); p. 349 - 368

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other:
Principles of method if other than guideline:
Method : incubation of the algae with title comp.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
Chlamydomonas reinhardtii
Details on test organisms:
Species or Test-System : Chlamidomonas reinhardtii 11-32b

Study design

Test type:
not specified
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
21 d

Results and discussion

Effect concentrationsopen allclose all
Duration:
21 d
Dose descriptor:
other: not reported
Effect conc.:
250 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
test mat.
Basis for effect:
other: decrease of title comp. concn. in cultural medium
Duration:
14 d
Dose descriptor:
other: not reported
Effect conc.:
250 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
test mat.
Basis for effect:
other: chlorophyll content
Details on results:
Further Details : in M12 medium under continous illumination (60 μmol/photons/m2*sec) at 22 deg C; abiotic loss of title comp. between 1 and 4 percent

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Executive summary:

1. Decrease in concentration of title compound by 42 %

2. Marked decrease in chlorophyll content up to 57.1 mg/l compared to 74.8 mg/l in control