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EC number: 944-067-2 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Remarks:
- ErC50
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- October 2017
- Reliability:
- 2 (reliable with restrictions)
- 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:
- The executive summary of the QSAR prediction is presented in the endpoint summary. The QMRF and QPRF documentation files are included below in the Attached justification section.
- Qualifier:
- according to guideline
- Guideline:
- other: REACH Guidance R.6: QSARs and grouping of chemicals. Version May 2008.
- Version / remarks:
- In the QMR attached the model specifications are presented. In this QMR is referenced to the Methodology document for the ecological Structure-Activity Relationship model (ECOSAR) Class Programm MS Windows v1.11'. United States Environmental Protection Agency, Office of Pollution Prevention and Toxics, Washington DC (2012).
- GLP compliance:
- no
- Remarks:
- not required
- Test organisms (species):
- other: green algae
- Water media type:
- freshwater
- Total exposure duration:
- 72 h
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 3.5 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: Log Kow used 3.8; ECOSAR class: Neutral organic
- Validity criteria fulfilled:
- yes
- Remarks:
- The substance is in the applicability domain of the model and the scientific validity of the model is met as presented in the QMR.
- Conclusions:
- The ErC50 is 3.0 mg/L.
- Executive summary:
The acute algae ErC50 for the neutral organic substance Dimeth Cyclormol is predicted to be 3.5 mg/l based on the ECOSAR SAR for neutral organics using an experimental log Kow of 3.8,molecular weight of 178.28 and the equation:Log ErC50 (mmol/L) = -0.6922 log Kow + 0.9253
Dimeth Cyclormolis in the applicability domain of the ECOSAR prediction because: a) Dimeth Cyclormol is a neutral organic presenting the toxicity solely by its bioavailability (i.e. without fragments that activate this neutralorganic b) its log Kow is 3.8 (≤6.4); c) its MW is 178.28 (< 1000); and; d) the toxicity predicted is below its water solubility of 467.3 mg/l.
For the prediction the measured log Kow of 3.8 is used because the predicted log Kow (2.8) is more than 0.5 unit different (lower) compared to the measured one (IFF criterion).
ECOSAR log Kow analogues available are Trans-Anethole (CAS 4180-23-8 with a Log Kow of 3.4 (EPI) and molecular weight of 148) and 1,2,4 Trichlorobenzene (CAS 120-82-1 with a Log Kow of 3.9 (EPI) and molecular weight of 182). For Trans-Anethole the experimental and predicted values were 4.24 and 5.63 mg/l, respectively. For 1,2,4-Trichlorobenzene the experimental and predicted values were 1.4 and 2.93 mg/l, respectively. These experimental and predicted values being less than factor of 3 different, further confirm the limited uncertainty of the prediction of ECOSAR for Dimeth Cyclormol.
The fit in the applicability domain and the availability of analogues in the training set results in limited uncertainty of the Dimeth Cyclormol prediction. This shows that the prediction is reliable and a Klimisch 2 can be assigned. In accordance with REACH Annex XI, the validity of the (Q)SAR is documented in a QMR for acute algae toxicity on neutral organics (see attached report). The adequate and reliable documentation, presented below, further supports this prediction.
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Remarks:
- ErC10
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- October 2017
- Reliability:
- 2 (reliable with restrictions)
- 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:
- The executive summary of the QSAR prediction is presented in the endpoint summary. The QMRF and QPRF documentation files are included below in the Attached justification section.
- Qualifier:
- according to guideline
- Guideline:
- other: REACH Guidance R.6: QSARs and grouping of chemicals. Version May 2008
- Version / remarks:
- In the QMR attached the model specifications are presented. In this QMR is referenced to the Methodology document for the ecological Structure-Activity Relationship model (ECOSAR) Class Programm MS Windows v1.11'. United States Environmental Protection Agency, Office of Pollution Prevention and Toxics, Washington DC (2012).
- GLP compliance:
- no
- Remarks:
- not required
- Test organisms (species):
- other: green algae
- Total exposure duration:
- 72 h
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC10
- Effect conc.:
- 1.3 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other:
- Remarks:
- Log Kow 3.8; ECOSAR class: Neutral organic
- Validity criteria fulfilled:
- yes
- Remarks:
- The substance is in the applicability domain of the model and the scientific validity of the model is met as presented in the QMR.
- Conclusions:
- The ErC10 is 1.3 mg/l.
- Executive summary:
The chronic algae ErC10 for the neutral organic Dimeth Cyclormol is predicted to be 1.3 mg/l based on the ECOSAR SAR for neutral organics using an experimental log Kow of 3.8,molecular weight of 178.28 and the equation: Log ErC10 (mmol/L) = -0.6029 log Kow + 0.1648
Dimeth Cyclormol is in the applicability domain of the ECOSAR prediction because: a) Dimeth Cyclormol is a neutral organic presenting the toxicity solely by its bioavailability (i.e. without fragments that activate this neutral organic); b) its log Kow is 3.8 (≤ 8.0); c) its MW is 178.28(< 1000); and; d) the toxicity predicted is below its water solubility of 467.3 mg/l.
For the prediction the measured log Kow of 3.8 is used because the predicted log Kow (2.8) is more than 0.5 unit different (lower) compared to the measured one (IFF criterion).
The ECOSAR analogues with a similar log Kow are Trans Anethole (CAS 4180-23-8 with a Log Kow of 3.4 (EPI) and molecular weight of 148) and 1,2,4-Trichlorobenzene (CAS 120-82-1 with a Log Kow of 3.9 (EPI) and molecular weight of 182). For Trans-Anethole the experimental and the predicted values are 3.09 and 1.96 mg/l, respectively. For 1,2,4-Trichlorobenzene the experimental and predicted values are 0.37 and 1.14 mg/l, respectively. These experimental and predicted values being less than factor of 3 difference further confirm the limited uncertainty of the prediction of ECOSAR for Dimeth Cylclormol. The fit in the applicability domain and the availability of analogues in the training set results in limited uncertainty of the Dimeth Cyclormol prediction. This shows that the prediction is reliable and a Klimisch 2 can be assigned. In accordance with REACH Annex XI, the validity of the (Q)SAR is documented in a QMR for chronic algae toxicity on neutral organics (see attached report). The adequate and reliable documentation, presented below, further supports this prediction.
Referenceopen allclose all
Description of key information
Acute algae
The acute algae ErC50 for the neutral organic substance Dimeth Cyclormol is predicted to be 3.5 mg/l based on the ECOSAR SAR for neutral organics using an experimental log Kow of 3.8,molecular weight of 178.28 and the equation:Log ErC50 (mmol/L) = -0.6922 log Kow + 0.9253
Dimeth Cyclormolis in the applicability domain of the ECOSAR prediction because: a) Dimeth Cyclormol is a neutral organic presenting the toxicity solely by its bioavailability (i.e. without fragments that activate this neutralorganic b) its log Kow is 3.8 (≤6.4); c) its MW is 178.28 (< 1000); and; d) the toxicity predicted is below its water solubility of 467.3 mg/l.
For the prediction the measured log Kow of 3.8 is used because the predicted log Kow (2.8) is more than 0.5 unit different (lower) compared to the measured one (IFF criterion).
ECOSAR log Kow analogues available are Trans-Anethole (CAS 4180-23-8 with a Log Kow of 3.4 (EPI) and molecular weight of 148) and 1,2,4 Trichlorobenzene (CAS 120-82-1 with a Log Kow of 3.9 (EPI) and molecular weight of 182). For Trans-Anethole the experimental and predicted values were 4.24 and 5.63 mg/l, respectively. For 1,2,4-Trichlorobenzene the experimental and predicted values were 1.4 and 2.93 mg/l, respectively. These experimental and predicted values being less than factor of 3 different, further confirm the limited uncertainty of the prediction of ECOSAR for Dimeth Cyclormol.
The fit in the applicability domain and the availability of analogues in the training set results in limited uncertainty of the Dimeth Cyclormol prediction. This shows that the prediction is reliable and a Klimisch 2 can be assigned. In accordance with REACH Annex XI, the validity of the (Q)SAR is documented in a QMR for acute algae toxicity on neutral organics (see attached report). The adequate and reliable documentation, presented below, further supports this prediction.
Chronic algae
The chronic algae ErC10 for the neutral organic Dimeth Cyclormol is predicted to be 1.3 mg/l based on the ECOSAR SAR for neutral organics using an experimental log Kow of 3.8,molecular weight of 178.28 and the equation: Log ErC10 (mmol/L) = -0.6029 log Kow + 0.1648
Dimeth Cyclormol is in the applicability domain of the ECOSAR prediction because: a) Dimeth Cyclormol is a neutral organic presenting the toxicity solely by its bioavailability (i.e. without fragments that activate this neutral organic); b) its log Kow is 3.8 (≤ 8.0); c) its MW is 178.28(< 1000); and; d) the toxicity predicted is below its water solubility of 467.3 mg/l.
For the prediction the measured log Kow of 3.8 is used because the predicted log Kow (2.8) is more than 0.5 unit different (lower) compared to the measured one (IFF criterion).
The ECOSAR analogues with a similar log Kow are Trans Anethole (CAS 4180-23-8 with a Log Kow of 3.4 (EPI) and molecular weight of 148) and 1,2,4-Trichlorobenzene (CAS 120-82-1 with a Log Kow of 3.9 (EPI) and molecular weight of 182). For Trans-Anethole the experimental and the predicted values are 3.09 and 1.96 mg/l, respectively. For 1,2,4-Trichlorobenzene the experimental and predicted values are 0.37 and 1.14 mg/l, respectively. These experimental and predicted values being less than factor of 3 difference further confirm the limited uncertainty of the prediction of ECOSAR for Dimeth Cylclormol. The fit in the applicability domain and the availability of analogues in the training set results in limited uncertainty of the Dimeth Cyclormol prediction. This shows that the prediction is reliable and a Klimisch 2 can be assigned. In accordance with REACH Annex XI, the validity of the (Q)SAR is documented in a QMR for chronic algae toxicity on neutral organics (see attached report). The adequate and reliable documentation, presented below, further supports this prediction.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 3.5 mg/L
- EC10 or NOEC for freshwater algae:
- 1.3 mg/L
Additional information
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