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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Link to relevant study record(s)

Reference
Endpoint:
long-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23 day reproduction
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
Cited in handbooks.
Peer reviewed research following accepted scientific prodecures using suitable vanadium salt for assessment
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 211 (Daphnia magna Reproduction Test)
GLP compliance:
no
Specific details on test material used for the study:
Not specified.
Considered a good source of water soluble vanadium for aquatic testing.
Analytical monitoring:
yes
Vehicle:
no
Test organisms (species):
Daphnia magna
Test type:
semi-static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
23 d
Hardness:
ca 210 mg/l CaCO3
pH:
8.2 - 8.9
Reference substance (positive control):
no
Duration:
23 d
Dose descriptor:
NOEC
Effect conc.:
ca. 1.34 mg/L
Nominal / measured:
meas. (arithm. mean)
Conc. based on:
element
Remarks:
Vanadium
Basis for effect:
reproduction
Key result
Duration:
23 d
Dose descriptor:
NOEC
Effect conc.:
ca. 4.5 mg/L
Nominal / measured:
estimated
Conc. based on:
test mat.
Basis for effect:
reproduction
Remarks on result:
other: Starting with NOEC 1.34 mg/l for V and using molecular weight of constituent with greatest proportion of vanadium
Validity criteria fulfilled:
not specified
Conclusions:
Immobilisation was seen at the highest tested concentrations, but surviving Daphnia reproduced normally.
NOEC 4.5 mg/l used for CSR

Description of key information

Immobilisation was seen at the highest tested concentrations, but surviving Daphnia reproduced normally.

NOEC 4.5 mg/l used for CSR

Key value for chemical safety assessment

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

Additional information