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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
January - May 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)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Analytical monitoring:
yes
Vehicle:
no
Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
72 h
Remarks on exposure duration:
Standard exposure duration
Post exposure observation period:
No post-exposure observation period
Hardness:
250 mg CaCO3/L (2.502 mmol/L)
Test temperature:
21 ± 2°C
pH:
7.8 ± 0.2
Dissolved oxygen:
>= 3 mg/L
Salinity:
<0.5 ppt
Conductivity:
25 mS/m
Nominal and measured concentrations:
100 mg/L (measured concentration)
Reference substance (positive control):
yes
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 100 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
test mat.
Basis for effect:
cell number
Validity criteria fulfilled:
yes
Conclusions:
At a limit concentration of 100 mg/L, SP02 was not observed to affect the growth rate of Pseudokirchneriella subcapitata. The NOEC is therefore 100 mg/L.
Executive summary:

At a limit concentration of 100 mg/L, SP02 was not observed to affect the growth rate of Pseudokirchneriella subcapitata. The NOEC is therefore 100 mg/L.

Description of key information

At a limit concentration of 100 mg/L, SP02 was not observed to affect the growth rate of Pseudokirchneriella subcapitata. The NOEC is therefore 100 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information