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EC number: 237-358-4 | CAS number: 13762-14-6
- 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
Toxicity to other aquatic organisms
Administrative data
Link to relevant study record(s)
Description of key information
Additional information
No data on toxicity to other aquatic organisms are available for cobalt molybdenum oxide. However, there are reliable data available for different structurally analogue substances.
The environmental fate pathways and ecotoxicity effects assessments for cobalt metal and cobalt compounds as well as for molybdenum metal and molybdenum compounds is based on the observation that adverse effects to aquatic, soil- and sediment-dwelling organisms are a consequence of exposure to the bioavailable ion, released by the parent compound. The result of this assumption is that the ecotoxicology will be similar for all soluble cobalt and molybdenum substances used in the ecotoxicity tests. Therefore, data from soluble cobalt and molybdenum substances are used in the derivation of ecotoxicological and environmental fate endpoints, based on the cobalt ion and molybdenum ion, respectively.
Cobalt
No data on the toxicity to other aquatic organisms are available.
Molybdenum
Freshwater:
For the snail Lymnaea stagnalis, the 28d-EC10 value of 221.3 mg/L is retained for assessment purposes. As mentioned previously, EC10 values are preferred over NOEC values as the latter are test-dependent values. In this specific case the 28d-EC10 of 221.3 mg/L is slightly higher than the 28d-NOEC of 200 mg/L for this endpoint. The latter concentration level, however, only caused 5-6% effect on growth, i.e. well below the effect level of 10% that is considered relevant for chronic toxicity. The 28d-LOEC is almost a factor of 2 higher than the 28d-EC10.
For the frog Xenopus laevis, the 4d-EC10 value of 115.9 mg/L (effect parameter: malformation) is retained. This 4d-EC10 is almost a factor of 5 higher than the 4d-NOEC for this effect parameter. It should be noted, however, that the 8% malformations associated with this NOEC was also found at an exposure level of 87.3 mg/L. The lowest actual concentration that resulted in more than 10% effect was 177 mg/L, i.e. a factor of 1.5 higher than the derived 4d-EC10. The low NOEC is the result of the 10% effect found at an exposure concentration of 48.7 mg/L and the low inter-replicate variation, resulting in a significant effect compared to the control. Taking into account that 8% and 12% effect was observed at concentration levels of 87.3 mg/L and 177 mg/L, respectively, a 4d-EC10 of 115.9 mg/L for X. laevis is considered relevant and reliable.
Author, year |
Species |
Endpoint |
Value [mg Mo/L] |
De Schamphelaere et al., 2008 |
Lymnaea stagnalis |
28 d NOEC (growth rate) 28 d EC10 |
200 221.3 |
De Schamphelaere et al., 2008 |
Xenopus laevis |
4 d EC10 (morphology, malformation) |
115.9 |
4 d NOEC (morphology, malformation) |
22.4/87.3 |
Marine:
For the oyster Crassostrea gigas (Aquasense, 2009) an 48h-EC10 value of 1174 mg Mo/L (endpoint: larval development) is retained for the marine compartment. The 72h-NOEC value for this endpoint was 1100 mg Mo/L. The EC10 value, however, is preferred over the NOEC value as the latter is a test design-dependent value.
For the sand dollar Dendraster excentricus a 48h-EC10 value of 233.6 mg Mo/L (endpoint: proportion of normal developed larvae) is retained for the marine compartment. Comparable (though slightly higher) values were noted for other endpoints, e.g. number of normal larvae (254.5, 292.1 mg Mo/L).
The 72h-NOEC value for these endpoints was 217.9 mg Mo/L (exception: mortality: 438.4 mg Mo/L). The EC10 value, however, is preferred over the NOEC value as the latter is a test design-dependent value.
For the sea urchin Strongylocentrotus purpuratus (Parametrix, 2008) the 94h-EC10 value of 325.8 mg Mo/L is retained for the marine environment (endpoint: combined normal proportion). A comparable, though slightly higher 94h-EC10 value of 483 mg Mo/L was determined for the endpoint ‘normal proportion’. NOEC values for these endpoints were 80.2 -264.5 mg Mo/L. EC10 values, however, are preferred over NOEC values as the latter are test design-dependent values.
For the mussel Mytilus edulis (Morgan et al, 1986) an 48h-EC10value of 4.4 mg Mo/L (endpoint: larval development) is retained for the marine compartment.
Author, year |
Species |
Endpoint |
Value [mg Mo/L] |
Aquasense, 2009 |
Crassosstrea gigas |
48 h EC10 |
1174 |
48 h NOEC |
1100 |
||
Parametrix, 2008 |
Dendraster exentricus |
48 h EC10 |
233.6 |
48 h NOEC |
217.9 |
||
Parametrix, 2010 |
Strongylocentrotus prupuratus |
94 h EC10 94 h NOEC |
325.8 80.2 -264.5 |
Morgan et al., 1986 |
Mytilus edulis |
48 h EC10 |
4.4 |
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