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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2002
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
EU Method C.3 (Algal Inhibition test)
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
no
Analytical monitoring:
no
Vehicle:
no
Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Details on test organisms:
Source: SAG Sammlung von Algenkulturen at the University of Göttingen, Germany.
Test type:
static
Water media type:
not specified
Limit test:
no
Total exposure duration:
72 h
Hardness:
No data
Test temperature:
23 ± 2 °C
pH:
No data
Dissolved oxygen:
No data
Salinity:
No data
Conductivity:
No data
Nominal and measured concentrations:
Generally, test substance applied in at least five concentrations (1, 3.2 10, 32, 100 mg/L). Depending on the results, some tests were repeated including lower (0.1 and 0.32 mg/L) or higher (320 mg/L) concentrations.
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 320 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate

Description of key information

EC50 > 320 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
320 mg/L

Additional information

EC50 for freshwater algae > 320 mg/L