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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:
guideline study without detailed documentation

Data source

Reference
Reference Type:
other: reference to SNIF-file
Title:
Unnamed
Year:
1988
Report date:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
Version / remarks:
1984; conditions of incubation according to ISO-guideline 8692 (3) (1989)
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Test solutions

Vehicle:
yes
Remarks:
DMSO
Details on test solutions:
Identity and concentration of auxiliary solvent for dispersal: DMSO 10 ml/l algae-medium (Milli-Q filtered water).

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Study design

Water media type:
not specified
Limit test:
no
Total exposure duration:
96 h

Test conditions

Hardness:
25 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.03 mg/L
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.03 mg/L
Basis for effect:
biomass

Applicant's summary and conclusion

Conclusions:
The toxicity of the substance towards pseudokirchneriella subcapitata was investigated in a study according to OECD 201. A 72 h NOEC of 0.03 mg/L was determined.

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