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Diss Factsheets
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EC number: 214-787-5 | CAS number: 1194-65-6
- 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)
- Endpoint:
- phototransformation in water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- January 1989 to February 1989
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Study type:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EPA Guideline Subdivision N 161-2 (Photodegradation Studies in Water)
- Deviations:
- no
- GLP compliance:
- yes
- Radiolabelling:
- yes
- Analytical method:
- high-performance liquid chromatography
- Details on sampling:
- - Sampling intervals for the parent/transformation products: 0 hours, 1 day, 3 days, 7 days, 15 days and 21 days.
- Sampling method: At 0 hours five 1 mL samples were taken prior to filling the ampoules, at the remaining sampling times, one ampoule of the photolysis solution was taken from each of the four irradiated resevoirs and four from the dark controls. At sampling time 14 days, three more ampoules were taken from each irradiated resevoir for the isolation and identification of the degredation products. At sampling time 21 days, the remaining 16 ampoules from the irradiated resevoirs were also used for the identification of degradation products.
- Sample storage conditions before analysis: Samples were stored at 4 °C before analysis, and analysed within two days of sampling. - Light source:
- Xenon lamp
- Light spectrum: wavelength in nm:
- 340
- Duration:
- 21 d
- Temp.:
- 25 °C
- Initial conc. measured:
- 5.749 mg/L
- Dark controls:
- yes
- Remarks:
- non-irradiated samples
- Key result
- DT50:
- 10.2 d
- Test condition:
- natural sunlight at 40 º Northern latitude (15.1 days of Xenon light assuming first-order reaction kinetics)
- Transformation products:
- yes
- No.:
- #1
- No.:
- #2
- No.:
- #3
- No.:
- #4
- No.:
- #5
- No.:
- #6
- No.:
- #7
- No.:
- #8
- No.:
- #9
- No.:
- #10
- No.:
- #11
- No.:
- #12
- Conclusions:
- Under the conditions of the test, the photodegradation of the test material in water was determined to be a half-life of 10.2 days of natural sunlight at 40 º Northern latitude.
- Executive summary:
In a GLP compliant photodegradation in water study conducted in accordance with standardised guideline (EPA 161-2), the photodegradation of the test material was determined. Under the conditions of the test, the half-life of the test material in water is 10.2 days of natural sunlight at 40 º Northern latitude.
Reference
At sampling time 21 days, the total amount of [14C] in the irradiated solution was decreased to 95 % of the added [14C]. This loss is probably due to the disappearance of volatile degradation products when the ampoules are opened for analysis. In the dark controls, the test material remained stable. A [14C] balance of 99 % was found in these solutions, and the [14C] radioactivity was characterised as [14C]-dichlobenil. At sampling times 15 and 21 days, a degradation product was found which represented 14 and 17 % of the total [14C] radioactivity respectively. This compound was identified by MS 1H NMR and IR as #1 in the 'identity of degradation products' table. A mixture of polar compounds were also present at sampling times 15 and 21 days and represented 16 and 23 % of the total [14C] radioactivity respectively. Six of these compounds were identified by MS as #2 to #7 in the 'identity of degradation products' table above. Moreover, seven degradation products each present for less that 5 % of the [14C] radioactivity co-chromatographed on HPLC with the compounds #8 to #12 in the 'identity of degradation products' table above. The percentages at day 21 were 3, 1, 1, 2 and 4 % for compounds #8 to #12 respectively. The two other compounds could not be identified.
Description of key information
The half-life of the test material was determined to be 10.2 days according to study performed in line with EPA Guideline Subdivision N 161-2.
Key value for chemical safety assessment
- Half-life in water:
- 10.2 d
Additional information
See 'Environmental Fate and Pathways' endpoint summary.
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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