Registration Dossier

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1995

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
not specified
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
not specified
Total exposure duration:
48 h

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
EL50
Effect conc.:
ca. 210 mg/L
Remarks on result:
other: 95% confidence interval of 160 - 270 mg/l based on nominal loading rates

Any other information on results incl. tables

48-hr EL50 = 210 mg/l

95% confidence interval of 160 - 270 mg/l based on nominal loading rates. Numbers of immobilized daphnids after 48 hrs were 0, 0, 0, 0, 5, 11, 15, and 20 in the 0, 10, 22, 46, 100, 220, 460, and 1000 mg/l treatments. No excursions from protocol were noted. Analytical method used was gas chromatography-mass spectrometry. Mean reduction in the concentration of dissolved hydrocarbons during the test was 5.5% (range 0 - 23%).

Applicant's summary and conclusion