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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
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EC number: 632-619-2 | CAS number: 881685-58-1
- 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:
- supporting 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:
- The reaction of test item in the atmosphere with hydroxyl radicals has been estimated using the method of Atkinson as developed in the Atmospheric Oxidation Program.
- GLP compliance:
- no
- Remarks:
- not applicable
- Light source:
- other: not applicable
- Key result
- DT50:
- 2.29 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
- 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 2.29 hours.
- Executive summary:
The rate of photolytic degradation of the test substance in the atmosphere was estimated in the AOP program V1.8 (1996) 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 5.60501E-11 cm3/molecule/sec, with a 2.290 hours half-life. Therefore, the estimated half-life of the test substance in the atmosphere (by hydroxyl radical oxidation) was 2.290 hours.
Reference
A theoretical calculation of the potential for photo-oxidation of the test substance in the atmosphere was submitted, using the method of Atkinson (1988) and the software AOP v1.8. A rate constant of 56.05 10-12 cm³/molecule.s was calculated for reaction with OH radicals assuming a 12 hour day and OH radical concentration of 1.5 x 106 OH/cm3. This corresponded to a first-order DT50 of 0.191 days (2.29 hours).
Description of key information
Estimated half-life (Atkinson method) = 2.29 hours, in the atmosphere by hydroxyl radical oxidation, Hayes 2007
Key value for chemical safety assessment
- Half-life in air:
- 2.29 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 V1.8 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 5.605E-11 cm3/molecule/sec, with a 2.29 hours half-life. There is no ozone reaction estimation because no structure match was found.
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