Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
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
Endpoint summary
Administrative data
Description of key information
Additional information
Hydrolysis of cobalt molybdenum oxide is not expected. Cobalt molybdenum oxide is a water soluble (508 mg/L) inorganic salt of a weak Lewis base and acid. Therefore, salt hydrolysis may proceed, when it is transferred into the aquatic environment. Different aqueous cobalt and molybdate species will be formed depending on the pH and redox potential of the aquatic environment. In the aqueous environment, the aqueous cobalt speciation is dominated by hydrolysis complexes only at a basic pH range, while free Co2+ species are the most important aqueous complexes from pH up to 9. At low molybdate concentrations, dissolved molybdate exist in water predominantly as HMoO4- or H2MoO4 between pH 2 and 4.3, and MoO42- at pH > 4.3. Therefore, cobalt molybdenum oxide, cobalt and molybdate species present an equilibrium in aqueous media (pH 4-9). Under normal environmental conditions, the equilibrium is relative stable and not significantly affected by the pH condition. A pH dependent hydrolytic degradation process is not relevant for cobalt molybdenum oxide.
Biodegradation in water, sediment and soil is not an applicable endpoint for cobalt molybdenum oxide as the substance is inorganic.
No bioaccumulation data are available for cobalt molybdenum oxide, however various reliable data exist for cobalt and molybdenum (measured as environmental concentrations) and different analogue cobalt and molybdenum substances.
In general, the bioaccumulation potential of cobalt in natural ecosystems is relatively low. First of all, low BAFs have been reported in eight laboratory (steady state) studies and four field studies; five BSAF-sediment values have been found to be well below 1; and, four (out of four) average BSAF-soil values have been reported to be well below 1. In addition, results from six field investigations plus two laboratory studies indicate the absence of biomagnification of cobalt in natural food webs. Finally, cobalt is an essential micro-nutrient, the uptake of which is expected to be regulated to some extent by many organisms (Environment Canada, 2011).
For molybdenum, all of the 27 BCF/BAF reported are below 100 with the exception of one BAF measured for a mollusc exposed to background Mo water concentrations (BAF of 164). The data demonstrates that cobalt and molybdenum, like other essential elements, shows homeostatic control by organisms. Limited information on transfer of Mo through the food chain indicates that molybdenum does not biomagnify in aquatic food chains. For the terrestrial compartment, the data suggests that Mo is not significantly concentrated from soil to plants, or soil invertebrates with BCF/BAF of < 5, and that there is no further significant increase in concentration from diet to mammals or birds.
No adsorption/desorption data are available for cobalt molybdenum oxide, however various reliable data exist for cobalt and molybdenum (measured as environmental concentrations) and different analogue cobalt and molybdenum substances showing statistical or conservative partition coefficients for suspended matter, soil, STP, sediments in freshwater and in coastal waters. For Co, log Kd values for all types ranged from 0.41 to 5.83. For Mo, log Kd values for all types ranged from 2.94 to 3.45.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.