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Diss Factsheets
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EC number: 262-104-4 | CAS number: 60207-90-1
- 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
- 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
- Key result
- DT50:
- 14 h
- Remarks on result:
- other: Calculated based on restrictive rate estimation
- DT50:
- 3.4 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: Restrictive rate calculation
- Reaction with:
- OH radicals
- Rate constant:
- 0 cm³ molecule-1 s-1
- Remarks on result:
- other: AOP rate estimation
- 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 3.4 and 14 hours.
- Executive summary:
The rate of photolytic degradation of the test substance in the atmosphere was estimated in the AOP program V1.51 (1993) 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 37.776E-12 cm3/molecule/sec, with a 3.40 hours half-life. Based on a more restrictive estimation, supposing that the values taken to represent the triazole/dioxolane group in the estimation calculation show a too fast reactivity against an OH radical reaction, the recalculated rate constant was at 9.176E-12 cm3/molecule/sec, with a half-life of 14.0 hours. Therefore, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was between 3.4 and 14.0 hours. A half-life value of 14 hours was used for the CSA.
Reference
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 37.776E-12 cm3/molecule/sec and 3.40 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 9.176E-12 cm3/molecule/sec (Kmin) and 14.0 hours (max), respectively.
Description of key information
Estimated half-life (Atkinson method) = 3.4 - 14.0 hours, in the atmosphere by hydroxyl radical oxidation, Stamm 1994. A half-life of 14 h was used for the CSA as it can be considered worst-case.
Key value for chemical safety assessment
- Half-life in air:
- 14 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 V1.51 (1993) 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 37.776E-12 cm3/molecule/sec, with a 3.40 hours half-life. Based on a more restrictive estimation, the recalculated rate constant was at 9.176E-12 cm3/molecule/sec, with a half-life of 14.0 hours. The recalculated half-life was used for the CSA, assuming the worst case.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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