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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Remarks:
growth inhibition test
Type of information:
experimental study
Adequacy of study:
other information
Study period:
December 2007.
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Remarks:
OECD 201
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
not specified
Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Duration:
72 h
Dose descriptor:
EC50
Remarks:
yield
Effect conc.:
56 mg/L
Duration:
72 h
Dose descriptor:
NOEC
Remarks:
yield
Effect conc.:
32 mg/L
Duration:
72 h
Dose descriptor:
LOEC
Remarks:
yield
Effect conc.:
56 mg/L
Duration:
72 h
Dose descriptor:
NOEC
Remarks:
growth rate
Effect conc.:
32 mg/L
Duration:
72 h
Dose descriptor:
LOEC
Remarks:
growth rate
Effect conc.:
56 mg/L
Duration:
72 h
Dose descriptor:
EC50
Remarks:
growth rate
Effect conc.:
> 56 mg/L
Validity criteria fulfilled:
not specified
Conclusions:
The substance has a NOEC (72h) equal to 32 mg/L, for both yield and growth rate.

Description of key information

Based on the OECD 201 (growth inhibition test) on Pseudokirchinella subcapitata, the substance has a NOEC (72h) equal to 32 mg/L, for both yield and growth rate.

Key value for chemical safety assessment

EC50 for freshwater algae:
56 mg/L
EC10 or NOEC for freshwater algae:
32 mg/L

Additional information