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EC number: 242-538-0 | CAS number: 18727-04-3
- 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
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The ecotoxicity databases on the effects of soluble cobalt compounds to aquatic, soil- and sediment-dwelling organisms are extensive. It should be noted that the environmental fate pathways and ecotoxicity effects assessment of cobalt hydrogen citrate is based on the assumption that adverse effects to aquatic, soil- and sediment-dwelling organisms are a consequence of exposure to the bioavailable cobalt ion, released by the parent substances. The result of this assumption is that the ecotoxicology will be similar for all soluble cobalt substances used in the ecotoxicity tests. Therefore, data from soluble cobalt substances are used in the derivation of chronic ecotoxicological NOEC and L(E)C10 values. If both NOEC and L(E)C10 data are available for a given species, the L(E)C10 value was used in the effects assessment.
Conclusion on classification
Classification related key information
Water solubility: 27.65 g/L (OECD 105)
Biodegradation in water: 68% after 28 d (OECD 301C)
Aquatic acute toxicity:
to fish: 96 h, LC50(Danio rerio): > 135 mg/L, cobalt citrate
to algae: 72 h, ErC50(Desmodesmus subspicatus): 2.15 mg/L, cobalt citrate
to aquatic invertebrates: 48 h, EC50(Daphnia magna): 40.4 mg/L, cobalt citrate
Aquatic chronic toxicity:
to fish: 16 d, NOEC (Brachydanio rerio): 0.25 mg/L, RA
to algae: 72 h, NOErC (Desmodesmus subspicatus): 0.15 mg/L, cobalt citrate
to aquatic invertebrates: 28 d, NOEC (Daphnia magna): 0.012 mg/L, RA
Classification justification according to CLP
Based on the data above, there is evidence of rapid environmental transformation of cobalt hydrogen citrate. The acute aquatic toxicity L(E)C50 values are > 1 mg/L for fish, algae and aquatic invertebrates. Valid chronic toxicity data are available - the lowest NOEC is 0.012 mg/L for Daphnia and was chosen as chronic Environmental Reference Value.
Therefore, cobalt hydrogen citrate needs to be classified and labelled as environmental hazard Chronic Cat. 2 according to the Regulation (EC) No.1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2ndATP).
M-factor
for acute aquatic toxicity: -
M-factor
for chronic aquatic toxicity: -
Classification justification according to DSD
Based on the data above, there is evidence of rapid environmental transformation of cobalt hydrogen citrate. The acute aquatic toxicity L(E)C50 values are > 1 mg/L for fish, algae and aquatic invertebrates. Valid chronic toxicity data are available - the lowest NOEC is 0.012 mg/L for Daphnia and was chosen as chronic Environmental Reference Value.
Therefore, cobalt hydrogen citrate needs to be classified and labelled as environmental hazard R51/53 according to Directive 67/548/EEC.
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