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Diss Factsheets

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
long-term toxicity to aquatic invertebrates
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
07-2022
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
1. SOFTWARE
ECOSAR

2. MODEL (incl. version number)
v2.2

3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
COc1cc(CC=C)ccc1O
See other input values in the QPRF attached.

4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
See detailed information in QPRF/QMRF attached.

5. APPLICABILITY DOMAIN
See detailed information in QPRF/QMRF attached.

6. ADEQUACY OF THE RESULT
See detailed information in QPRF/QMRF attached.
Qualifier:
no guideline required
Principles of method if other than guideline:
see filed "Justification for type of information"
Analytical monitoring:
yes
Remarks:
Data included in ECOSAR are based on measured test concentrations maintained at greater than 80% of nominal concentrations.
Test organisms (species):
Daphnia sp.
Test type:
other: Semi-static or flow-through
Water media type:
freshwater
Total exposure duration:
21 d
Hardness:
< 150 mg CaCO3/L
pH:
6-8
Key result
Duration:
21 d
Dose descriptor:
NOEC
Effect conc.:
7.07 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
act. ingr.
Details on results:
The results are based on the Neutral Organics equation of ECOSAR as the prediction based on the Phenol equation is not reliable.
Validity criteria fulfilled:
yes
Remarks:
Applicability domain of the QSAR model respected.
Conclusions:
The daphnia 21-d NOEC is predicted to be 7.07 mg/L.
Executive summary:

The daphnia 21-d NOEC was predicted using the software ECOSAR v2.2. The predictions based on the equation for phenols and the equation for neutral organics. Due to the unreliability linked to the prediction derived from the phenol model, the neutral organics equation was selected. The results indicate that the NOEC is 7.07 mg/L. The calculation is reliable, validated and the substance properties fall within the applicability domain of the QSAR.

Description of key information

QSAR ECOSAR, 2022, K


21-d NOECdaphnia = 7.07 mg/L.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Dose descriptor:
NOEC
Effect concentration:
7.07 mg/L

Additional information

One QSAR is avaible to assess the chronic toxicty of the registered substance to aquatic invertebrate.


The daphnia 21-d NOEC was predicted using the software ECOSAR v2.2. The predictions based on the equation for phenols and the equation for neutral organics. Due to the unreliability linked to the prediction derived from the phenol model, the neutral organics equation was selected. The results indicate that the NOEC is 7.07 mg/L. The calculation is reliable, validated and the substance properties fall within the applicability domain of the QSAR.