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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Link to relevant study record(s)

Reference
Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Analytical monitoring:
yes
Details on sampling:
after 24, 48 and 72 h
Vehicle:
yes
Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
Test type:
other: with stirring
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
72 h
Hardness:
not determined
Test temperature:
21 to 24 ± 2 °C
pH:
~7
Dissolved oxygen:
Not measured.
Salinity:
N/A
Conductivity:
Not measured
Nominal and measured concentrations:
<0.00013mg/l based on water soulbiltiy
Reference substance (positive control):
yes
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
ca. 0 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
not determinable
Details on results:
EC50 is based on limit of soulbility for the substance
Results with reference substance (positive control):
Positive control is checked regulatrly
Validity criteria fulfilled:
yes
Conclusions:
EC50 is limited to 0.00013mg/L due to limit of water solubility

Description of key information

EC50 is limited to 0.00013 mg/L due to limit of water solubility.

Key value for chemical safety assessment

EC50 for freshwater algae:
0 mg/L

Additional information