Registration Dossier

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Compliance

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1991
Report Date:
1991

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: 84/449/EWG, C.2
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
25ml standard solution containing 2.5g test substance and 80mg alkylphenol-polyglycolether in acetone.

Test organisms

Test organisms (species):
other aquatic crustacea: DM

Test conditions

Hardness:
240mgCaCO3/L

Results and discussion

Effect concentrations
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
0.8 mg/L
Details on results:
% concentration loss over test: 89 to 96

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Remarks:
Met criteria set by CA for notification
Conclusions:
Very toxic to aquatic organisms
Executive summary:

Only limited data has been provided by ECHA, but it is apparent that the substance was poorly stable under the conditions of the study, despite using semi-static method for renewal of test media. It is known that the substance is very unstable in light and it can be assumed that the toxicity was as a result of exposure to one or more of the abiotic metabolites. This method of exposure is considered valid for risk assessment.