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Diss Factsheets
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EC number: 410-690-9 | CAS number: 103055-07-8 CGA 184699
- 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:
- key study
- Study period:
- Not applicable
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- An estimation of the atmospheric oxidization rate of the test substance was performed using the Atkinson method.
- GLP compliance:
- no
- Remarks:
- Not applicable
- Light source:
- other: not applicable
- Remarks on result:
- not measured/tested
- Key result
- DT50:
- 21.3 h
- Remarks on result:
- other: Calculated based on restrictive rate estimation
- DT50:
- 12.38 h
- Remarks on result:
- other: Calculated based on AOP rate estimation
- Reaction with:
- OH radicals
- Rate constant:
- 0 cm³ molecule-1 s-1
- Remarks on result:
- other: AOP Rate estimation
- Reaction with:
- OH radicals
- Rate constant:
- 0 cm³ molecule-1 s-1
- Remarks on result:
- other: Restrictive rate estimation
- Transformation products:
- not measured
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The estimated half-life (Atkinson method) of the test substance in the atmosphere (by hydroxyl radical oxidation) is between 12 and 22 hours.
- Executive summary:
The rate of photolytic degradation of the test substance in the atmosphere was estimated in the AOP program V1.75 (1995) using the Atkinson method. It was assumed that the OH radical concentration was 1.5E+06 OH radicals/cm3 and the OH timeframe was 12 hours/day. Based on AOP rate estimation, the overall OH rate constant was calculated to be 10.368E-12 cm3/molecule/sec, with a 12.38 hours half-life. Based on a more restrictive estimation, not accounting for unknown structural elements in the AOP estimation, the recalculated rate constant was at 6.033E-12 cm3/molecule/sec, with a half-life of 21.3 hours. Therefore, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was between 12.38 and 21.3 hours. A half-life value of 21.3 hours was used for the CSA.
Reference
Findings
Based on AOP rate estimation, assuming a constant concentration of 1.5E+06 OH-radical/cm3 and a 12 hours day, the total rate constant and the half-life period was calculated to be 10.368E-12 cm3/molecule/sec and 12.38 hours, respectively.
Based on restrictive rate estimation, assuming a constant concentration of 1.5E+06 OH-radical/cm3 and a 12 hours day, the total rate constant and the half-life period was calculated to be 6.033E-12 cm3/molecule/sec (Kmin) and 21.3 hours (max), respectively.
Description of key information
Estimated half-life (Atkinson method) = 12.38 - 21.3 hours, in the atmosphere by hydroxyl radical oxidation, Stamm 1994. Half-life = 21.3 h was used in CSR as it can be considered as worst-case.
Key value for chemical safety assessment
- Half-life in air:
- 21.3 h
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
There is one calculation available for this endpoint. The calculation was performed in the AOP program V1.75 (1995) using the Atkinson method. It was assumed that the OH radical concentration was 1.5E+06 OH radicals/cm3 and the OH timeframe was 12 hours/day. Based on AOP rate estimation, the overall OH rate constant was calculated to be 10.368E-12 cm3/molecule/sec, with a 12.38 hours half-life. Based on a more restrictive estimation, not accounting for unknown structural elements in the AOP estimation, the recalculated rate constant was at 6.033E-12 cm3/molecule/sec, with a half-life of 21.3 hours. Therefore, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was between 12.38 and 21.3 hours. A half-life value of 21.3 hours was used for the CSA.
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