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Diss Factsheets
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EC number: 217-682-2 | CAS number: 1929-82-4
- 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 water
Administrative data
Link to relevant study record(s)
Description of key information
Photolysis only
Half-life = 226 hours
Hydrolysis and photolysis
Half-life = 99.1 hours
Key value for chemical safety assessment
- Half-life in water:
- 226 h
Additional information
The aqueous photolysis of the test material was investigated in a study conducted under GLP conditions and in accordance with the standardised EPA Guideline Subdivision N 161-2 (Photodegradation Studies in Water). The study was assigned a reliability score of 1 in line with the criteria of Klimisch et al. (1997).
A 368 hour photolysis study was conducted with 14C-test material at 25 °C in an aqueous solution buffered at pH 7 with tris(hydroxymethyl)aminomethane hydrochloride. Portions of the solution, prepared at a nominal test concentration of 2 µg/mL, were exposed to the output of a 6500 W xenon arc light. Quantification of 14C-activity was performed by liquid scintillation counting; separations of the exposed solutions were carried out by high performance liquid chromatography. One photolysis product was identified by gas chromatography/mass spectrometry.
The test material was subject to both hydrolysis and photolysis under the conditions of this study. The first-order rate constant and half-life for test material degradation calculated for the combined processes from the experimental data were 0.00699 hour^-1 and 99.1 hours, respectively; for sensitised samples (prepared in a similar fashion but amended to contain 1 % acetone by volume), corresponding values of 0.0102 hour^-1 and 67.9 hours were obtained. When the effect of hydrolysis was factored out, the rate constants and half-lives due to photolysis alone were found to be 0.00306 hour^-1 and 226 hours for the non-sensitised samples and 0.00687 hour^-1 and 101 hours for the sensitised system.
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