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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
413-890-4
EC Name:
-
Cas Number:
82469-79-2
Molecular formula:
C28H50O8
IUPAC Name:
1,2,3-trihexyl 2-(butanoyloxy)propane-1,2,3-tricarboxylate

Test solutions

Details on test solutions:
Identity and concentration of auxiliary solvent for dispersal: dimethylformamide (DMF)

Test organisms

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

Study design

Limit test:
no
Total exposure duration:
96 h

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 1.04 mg/L
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 1.04 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
>= 1.04 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
>= 1.04 mg/L
Basis for effect:
biomass

Applicant's summary and conclusion

Conclusions:
Citroflex B-6 was not found to be toxic to Selenastrum capricornutum under the conditions of the test at an initial measured concentration of 1.04 mg/l an is considered to be of minimum phytotoxic concern.