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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:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
see attached justification
Reason / purpose:
read-across source
Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
72 h
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
1.5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other: 95%-CI = 1.2 - 1.9 mg/L
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.125 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Validity criteria fulfilled:
yes
Conclusions:
The 72-h EC50 of HIDT against green algae, read across from DMPT and corrected for molecular weight, is 2.1 mg/L.

Description of key information

The 72-h EC50 of HIDT against green algae, read across from DMPT and corrected for molecular weight, is 2.1 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
2.1 mg/L

Additional information