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Diss Factsheets
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EC number: 208-169-4 | CAS number: 513-79-1
- 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
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Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Relevant and reliable data that could be used for classification and PNEC for freshwater aquatic plants other than algae were only available for the duckweed, Lemna minor. A total of seven studies were identified; EC50s ranged from 19.3-127.2 µg Co/L and the EC10s ranged from 4.9–31.2 µg Co/L; variability is attributed to differences in the characteristics of the test waters. Values for the CSA were geometric means of the available data for the common endpoint of frond count (more sensitive endpoint).
Key value for chemical safety assessment
- EC50 for freshwater plants:
- 52 µg/L
- EC10 or NOEC for freshwater plants:
- 10.4 µg/L
Additional information
Freshwater:
From the database of cobalt toxicity to freshwater plants, high quality NOEC and EC10 values are reported for the duckweed, Lemna minor. The following table indicates the high quality EC10 values used for the HC5 and aquatic freshwater PNEC derivation:
Table 6.1.5 -3. High quality studies used for derivation of the HC5 and aquatic freshwater PNEC
|
Species |
Endpoint |
Value (mg Co/L) |
Heijerick et al, 2007 |
Lemna minor (duckweed) |
Growth rate |
EC50: 90.1 EC10: 4.9 |
OSU 2017a |
Lemna minor (duckweed) |
frond count |
EC50: 127.16 EC10: 31.2 EC50: 19.3 EC10: 5.4 EC50 : 51.6 EC10: 7.3 EC50: 43.0 EC10: 7.9 EC50: 106.4 EC10: 15.0 |
OSU 2017b |
Lemna minor (duckweed) |
frond count |
EC50: 34.3 EC10: 8.7 |
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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