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Diss Factsheets
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EC number: 249-528-5 | CAS number: 29232-93-7
- 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 applicatble
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- AOP calculation (Atkinson method)
- GLP compliance:
- no
- Remarks:
- not applicable
- Light source:
- other: not applicable
- Reference substance:
- no
- Key result
- DT50:
- 0.802 h
- Test condition:
- value is calculated based on average conditions (12 hours day and 1.5E6 OH radicals/cm3)
- Remarks on result:
- not measured/tested
- Reaction with:
- OH radicals
- Rate constant:
- 0 cm³ molecule-1 s-1
- Transformation products:
- not measured
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Based on the results of the AOP, the estimated half-life (Atkinson method) of the test substance in the atmosphere (by hydroxyl radical oxidation) is 0.802 hours.
- Executive summary:
The half-life of the substance following reaction in the atmosphere with hydroxyl radicals was estimated using the Atkinson method in Atmospheric Oxidation Program version 1.8. Based on 1.5E6 OH radicals/cm3 and 12-hr per day, the overall OH rate constant was estimated to be 160.0694E-12 cm3/molecule-sec, with a 0.067 days half-life (equivalent to 0.802 hours). Based on the findings, the exposure to air can be considered to be negligible.
Reference
- AOP Rate estimation: Overall OH Rate Constant = 160.0694 E-12 cm3/molecule-sec; Half-life = 0.067 days (12-hr day; 1.5E6 OH/cm3); Half-life = 0.802 Hrs
- Applicability domain: Hydrogen Abstraction, Reaction with N, S and -OH and Addition to Aromatic Rings
Description of key information
Estimated photodegradation half - life (Atkinson method) = 0.802 hours, in the atmosphere by hydroxyl radical oxidation, Hayes 1998
Key value for chemical safety assessment
- Half-life in air:
- 0.802 h
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
Phototransformation in air
The half-life of the substance following reaction in the atmosphere with hydroxyl radicals was estimated using the Atkinson method in Atmospheric Oxidation Program version 1.8. Based on 1.5E6 OH radicals/cm3 and 12-hr per day, the overall OH rate constant was estimated to be 160.0694E-12 cm3/molecule-sec, with a 0.067 days half-life (equivalent to 0.802 hours). Based on the findings, the exposure to air can be considered to be negligible.
Volatilisation
Additional volatilisation properties of the test substance in formulation were investigated in another study (Maclver, 1996; not included in the current submission) showing 21.9% and 34.4% volatilisation from air and leaf, respectively, after 24h (20°C, air stream of 1m/s).
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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