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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

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)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
yes
Analytical monitoring:
yes
Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Test type:
static
Limit test:
no
Key result
Duration:
72 h
Dose descriptor:
EC10
Effect conc.:
0.055 mg/L
Nominal / measured:
meas. (geom. mean)
Conc. based on:
test mat.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 0.282 mg/L
Nominal / measured:
meas. (geom. mean)
Conc. based on:
test mat.
Basis for effect:
growth rate
Validity criteria fulfilled:
yes
Conclusions:

The EC10 for specific growth rate was 0.055 mg/L based on measured concentrations.
The EC50 for specific growth rate was >0.282 mg/L.
Range finding tests indicated that the result for the EC50 would be between 0.282 and 0.71 mg/L.
Executive summary:

The EC10 for specific growth rate was 0.055 mg/L based on measured concentrations.

The EC50 for specific growth rate was >0.282 mg/L.

Range finding tests indicated that the result for the EC50 would be between 0.282 and 0.71 mg/L.

Description of key information

The EC10 for specific growth rate was 0.055 mg/L based on measured concentrations.

The EC50 for specific growth rate was >0.282 mg/L.

Range finding tests indicated that the result for the EC50 would be between 0.282 and 0.71 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.282 mg/L
EC10 or NOEC for freshwater algae:
0.055 mg/L

Additional information