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Diss Factsheets
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EC number: 203-479-6 | CAS number: 107-29-9
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.03 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.3 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.003 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 500 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 135 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 13.5 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 9.38 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
- Reliable acute toxicity data are available for fish (Buccafusco 1981a, 1981b, Geiger et al., 1990), algae (van Dijk., 2005) and crustacea (Palmieri, 1981). The 48-hour Daphnia magna test resulted in an EC50of 770 mg/L, whereas an ErC50of 74 mg/L was found in the 72-hour toxicity test on Selenastrum capricornutum. The lowest 96-hour LC50for fish was reported in Bluegill sunfish (Lepomis macrochirus), namely 30 mg/L.
- Based on the fact that the most sensitive species should be taken into account for determination of the aquatic hazard, the classification should be based on the outcome of the fish test. When comparing these test results with the respective criterion (> 10 mg/L), it can be concluded that no classification for Acute Aquatic Toxicity is warranted according to the CLP Regulation (EC) No. 1272/2008 (amended according to Commission Regulation No 286/2011).
- Chronic toxicity data is not available for AAO.
- Experimental data on biodegradation is available (Stevenson and Blum, 1981). Under standard ready biodegradation test conditions, the test chemical displayed degradation, however the criteria for readily biodegradable were not fulfilled. Therefore, AAO would be regarded as inherently biodegradable rather than readily biodegradable.
- Experimental data on bioaccumulation not available. However, as the log Kow is below 1 and the estimated BCF is 0.5, the low bioaccumulative potential of AAO is sufficiently demonstrated.
- As a consequence of the fact that the substance is not rapidly biodegradable (only inherently) and the absence of adequate chronic toxicity data chronic toxicity will be based upon the results of the acute toxicity data. As the acute toxicity data indicate effect levels of 30 mg/L, it has to be concluded that the substance (AAO) is to be classified as Chronic Category 3.
- An M-factor for chronic toxicity could not be determined as there is no chronic toxicity information.
- Reliable acute toxicity data are available for fish (Buccafusco 1981a, 1981b, Geiger et al., 1990), algae (van Dijk., 2005) and crustacea (Palmieri, 1981). The 48-hour Daphnia magna test resulted in an EC50of 770 mg/L, whereas an ErC50of 74 mg/L was found in the 72-hour toxicity test on Selenastrum capricornutum. The lowest 96-hour LC50for fish was reported in Bluegill sunfish (Lepomis macrochirus), namely 30 mg/L.
- Based on the fact that the most sensitive species should be taken into account for determination of the aquatic hazard, the classification should be based on the outcome of the fish test.
- Experimental data on biodegradation is available (Stevenson and Blum, 1981). Under standard ready biodegradation test conditions, the test chemical displayed degradation, however the criteria for readily biodegradable were not fulfilled. Therefore, AAO would be regarded as inherently biodegradable rather than readily biodegradable.
- Experimental data on bioaccumulation not available. However, as the log Kow is below 1 and the estimated BCF is 0.5, the low bioaccumulative potential of AAO is sufficiently demonstrated.
- As a consequence, AAO should be classified as R52/R53 according to the criteria as mentioned in section 5 of Annex VI of Directive 67/548 (Dangerous Substances Directive).
CLP
Acute aquatic hazard:
Chronic aquatic hazard:
DSD
Acute and chronic aquatic hazard:
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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