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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Reference
Endpoint:
long-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2003
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
OECD Guideline 211 (Daphnia magna Reproduction Test)
Deviations:
not specified
GLP compliance:
yes
Analytical monitoring:
yes
Details on sampling:
The test concentrations were measured for renewal and old test solution at the start of the test and 1, 3, 5, 7, 9, 15 and 17-day.
Vehicle:
no
Test organisms (species):
Daphnia magna
Details on test organisms:
TEST ORGANISM
- Common name: Daphnia magna
- Strain/clone: no data
- Justification for species other than prescribed by test guideline:
- Source: National Institute for Environmental Studies (Japan)
- Age of parental stock (mean and range, SD): < 24h
- Feeding during test
- Food type: Chlorella vulgaris,
- Amount: 0.1 - 0.2 mg
- Frequency:

ACCLIMATION
- Acclimation period: 21 - 4 weeks
- Acclimation conditions (same as test or not):
- Type and amount of food:
- Feeding frequency:
- Health during acclimation (any mortality observed):

QUARANTINE (wild caught)
- Duration:
- Health/mortality:

METHOD FOR PREPARATION AND COLLECTION OF EARLY INSTARS OR OTHER LIFE STAGES:
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
21 d
Hardness:
26.2 mg/L as CaCO3
Test temperature:
20 +/- 1°C
pH:
6.73 to 7.75
Nominal and measured concentrations:
Nominal Concentrations: control, 0.10, 0.32, 1.00, 3.20 and 10.00 mg/L
Measured Concentrations: 17d; 0.101, 0.325, 10.19, 3.256 and 10.215, mg/L
Reference substance (positive control):
no
Key result
Duration:
21 d
Dose descriptor:
NOEC
Effect conc.:
3.2 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
reproduction
Validity criteria fulfilled:
not specified
Conclusions:
The chronic toxicity to Daphnia study determined the NOEC 3.2 mg/L

Description of key information

The chronic toxicity to Daphnia study determined the NOEC 3.2 mg/L

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
3.2 mg/L

Additional information