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Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
sediment toxicity: short-term
Type of information:
experimental study
Adequacy of study:
key study
Study period:
10 day exposure. Performed 2004
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Justification for type of information:
Test material supplied to the laboratory as ca 50% commercial grade mixture in ethanediol and butanol with water.
The presence of these solvents were not considered to impact on the test result.
Qualifier:
equivalent or similar to guideline
Guideline:
ASTM E1688 (Sediment Toxicity Test (Media: Sediment-marine))
Version / remarks:
Spiked sediments, marine
GLP compliance:
yes
Specific details on test material used for the study:
Test material supplied to the laboratory as ca 50% commercial grade mixture in ethanediol and butanol with water.
The presence of these solvents were not considered to impact on the test result.
Analytical monitoring:
no
Vehicle:
no
Details on sediment and application:
Sediment collected from intertidal area free of known contamination. Sediment was seived at 200 um in seawater
Test organisms (species):
Corophium volutator
Study type:
laboratory study
Test type:
static
Water media type:
saltwater
Type of sediment:
natural sediment
Limit test:
no
Duration:
10 d
Exposure phase:
total exposure duration
Test temperature:
ca 15 C
pH:
7.5 - 8.5
Dissolved oxygen:
> 85% saturation
Salinity:
3.3%
Nominal and measured concentrations:
Nominal 0, 50, 258, 879, 3034 and 10028 mg/kg dry weight spike concentrations as 50% actives commercial grade
Estimated 0, 25, 130, 440, 1520, 5000 mg/kg dry weight as actives
Reference substance (positive control):
not specified
Duration:
10 d
Dose descriptor:
EC50
Effect conc.:
ca. 151 mg/kg sediment dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality
Key result
Duration:
10 d
Dose descriptor:
EC50
Effect conc.:
ca. 75 mg/kg sediment dw
Nominal / measured:
estimated
Conc. based on:
act. ingr.
Basis for effect:
mortality
Details on results:
EC50 estimated ca 75 mg/kg dry weight for the active substance, based on nominal 50% actives in commercial grade material tested
Validity criteria fulfilled:
yes
Conclusions:
EC50 estimated ca 75 mg/kg dry weight for the active substance, based on nominal 50% actives in commercial grade material tested
Test material supplied to the laboratory as ca 50% commercial grade mixture in ethanediol and butanol with water.
The presence of these solvents were not considered to impact on the test result.

Description of key information

EC50 estimated ca 75 mg/kg dry weight for the active substance, based on nominal 50% actives in commercial grade material tested

Test material supplied to the laboratory as ca 50% commercial grade mixture in ethanediol and butanol with water.

The presence of these solvents were not considered to impact on the test result.

Key value for chemical safety assessment

EC50 or LC50 for marine water sediment:
75 mg/kg sediment dw

Additional information