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Diss Factsheets
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EC number: 230-711-3 | CAS number: 7287-19-6
- 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
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Study period:
- Not applicable
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline required
- GLP compliance:
- no
- Remarks:
- Not applicable
- Light source:
- other: not applicable
- Key result
- DT50:
- 3.4 h
- Remarks on result:
- not measured/tested
- Remarks:
- values is calculated based on AOP rate estimation
- Key result
- DT50:
- 5 h
- Remarks on result:
- not measured/tested
- Remarks:
- Value if calculated based on restrictiverate estimation
- Reaction with:
- OH radicals
- Rate constant:
- 38.061 cm³ molecule-1 s-1
- Remarks on result:
- other: Value is calculated based on AOP rate estimation
- Reaction with:
- OH radicals
- Rate constant:
- 25.467 cm³ molecule-1 s-1
- Remarks on result:
- other: Value is calculated based on restrictive rate estimation
- Transformation products:
- not measured
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Based on the results of the AOP and restrictive rate estimation, the estimated half-life (Atkinson method) of the test substance in the atmosphere (by hydroxyl radical oxidation) is between 3 and 5 hours.
- Executive summary:
An estimation of the atmospheric oxidization rate based on an AOP rate estimation resulted in an overall OH rate constant of 38.01612E-12 cm3/molecule-sec, with a 0.28 days half-life (equivalent to 3.4 hours). A more restrictive estimation, not accounting for unknown structural elements in the AOP estimation, the recalculated rate constant was at 25.467E-12 cm3/molecule-sec, with a half-life of 5 hours. The rate for photolytic degradation in the atmosphere was estimated with a commercial software using the Atkinson method. Based on the calculations, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was between 3 and 5 hours. A half-life value of 4 hours was used for the CSA. However, both aerial degradation pathways are anticipated not to be relevant under normal environmental conditions due to the very low vapour pressure of the substance.
Reference
- AOP Rate estimation: Overall OH Rate Constant = 38.0612 E-12 cm3/molecule-sec; Half-life = 0.28 days (12-hr day; 1.5E6 OH/cm3); Half-life = 3.4 Hrs
- Restrictive Rate estimation: The oxidation rate is as following results (calculated with 1.5E6 OH-Radicals/cm3 and a12 hours day): k(min) 25.467 E-12 cm3/molecule-sec; Halflife (max): 5.0 hours
- Rate assessment: The estimated half-life (Atkinson method) of the test substance in the atmosphere (by hydroxyl radical oxidation) is between 3 and 5 hours.
Description of key information
All available data were assessed and the study representing the worst-case effects is included here. The results can be considered worst-case and are selected for the CSA.
Estimated half-life (Atkinson method) = 4 hours, in the atmosphere by hydroxyl radical oxidation, Stamm 1996
Key value for chemical safety assessment
- Half-life in air:
- 4 h
Additional information
An estimation of the atmospheric oxidization rate based on an AOP rate estimation resulted in an overall OH rate constant of 38.01612E-12 cm3/molecule-sec, with a half-life of 0.28 days (equivalent to 3.4 hours). A more restrictive estimation, not accounting for unknown structural elements in the AOP estimation, provided a recalculated rate constant of 25.467E-12 cm3/molecule-sec, with a half-life of 5 hours. The rate for photolytic degradation in the atmosphere was estimated with a commercial software using the Atkinson method. Based on the calculations, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was between 3 and 5 hours. A half-life value of 4 hours was used for the CSA. However, both aerial degradation pathways are anticipated not to be relevant under normal environmental conditions due to the very low vapour pressure of the substance.
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