Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

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:
28 September 2020 - 22 October 2020
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Freshwater Alga and Cyanobacteria, Growth Inhibition Test)
GLP compliance:
yes
Specific details on test material used for the study:
Cola®Teric CNA-40
Batch/Lot # 2093C20
Imidazolium compounds, 2-C7-18-alkyl-1-(2-carboxyethyl)-4,5-dihydro-3(hydroxyethyl), hydroxides, sodium salts 31.5 % w/w; Water 68.5 % w/w
Analytical monitoring:
yes
Remarks:
TOC
Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
72 h
Test temperature:
21.6 - 22.5 °C
pH:
7.6 - 7.9
Nominal and measured concentrations:
Nominal concentrations: 1.5, 3.2, 7, 14.6, 31.7 mg/L
Measured concentration: 0.00, 0.06, 0.76, 1.86, 5.15 mg/L
Reference substance (positive control):
yes
Remarks:
Potassium dichromate K2Cr2O7 (CAS No. 7778-50-9)
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
0.99 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
yield
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
2.13 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
EC10
Effect conc.:
0.83 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
yield
Key result
Duration:
72 h
Dose descriptor:
EC10
Effect conc.:
0.87 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
LOEC
Effect conc.:
1 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
yield
Key result
Duration:
72 h
Dose descriptor:
LOEC
Effect conc.:
1 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.32 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
yield
Key result
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
0.32 mg/L
Nominal / measured:
nominal
Conc. based on:
act. ingr.
Basis for effect:
growth rate
Results with reference substance (positive control):
72h ErC50 1.00 mg/L (95% CI: 0.97 – 1.03 mg/L)
72h EyC50 0.35 mg/L (95% CI: 0.32 – 0.39 mg/L)
Validity criteria fulfilled:
yes

Description of key information

Key value for chemical safety assessment

Additional information