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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
results derived from a (Q)SAR model, with limited documentation / justification
Justification for type of information:
1. SOFTWARE
ECOSAR

2. MODEL (incl. version number)
ECOSAR v1.00a U.S. Environmental Protection Agency. [Internet download], 1.3.2011. Available from: http://www.epa.gov/oppt/newchems/tools/21ecosar.htm

3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
S=C1NC2=CC(OC(F)F)=CC=C2N1

4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
[Explain how the model fulfils the OECD principles for (Q)SAR model validation. Consider attaching the QMRF or providing a link]
- Defined endpoint:
- Unambiguous algorithm:
- Defined domain of applicability:
- Appropriate measures of goodness-of-fit and robustness and predictivity:
- Mechanistic interpretation:

5. APPLICABILITY DOMAIN
[Explain how the substance falls within the applicability domain of the model]
- Descriptor domain:
- Structural and mechanistic domains:
- Similarity with analogues in the training set:
- Other considerations (as appropriate):

6. ADEQUACY OF THE RESULT
[Explain how the prediction fits the purpose of classification and labelling and/or risk assessment]

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Guideline:
other: REACH Guidance on QSARs R.6
Principles of method if other than guideline:
ECOSAR v1.00a U.S. Environmental Protection Agency. [Internet download], 1.3.2011. Available from: http://www.epa.gov/oppt/newchems/tools/21ecosar.htm

Test material

Constituent 1
Chemical structure
Reference substance name:
5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
EC Number:
619-308-7
Cas Number:
97963-62-7
Molecular formula:
C8H6F2N2OS
IUPAC Name:
5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
SMILES: S=C1NC2=CC(OC(F)F)=CC=C2N1

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
mg/L
Remarks on result:
other: QSAR predicted value

Any other information on results incl. tables

ECOSAR v1.00a predicted EC50, 48 h, for Daphnid is 49.24 mg/L.

Applicant's summary and conclusion