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Diss Factsheets
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EC number: 208-047-0 | CAS number: 506-61-6
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.046 µg/L
- Assessment factor:
- 3
- Extrapolation method:
- sensitivity distribution
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.86 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 0.025 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 438.13 mg/kg sediment dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 438.13 mg/kg sediment dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 1.05 mg/kg soil dw
- Assessment factor:
- 3
- Extrapolation method:
- sensitivity distribution
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
For potassium dicyanoargentate, it is likely that the cyanide component will be degraded in STP, and the silver released to the environment from the silver cyanide complex will behave in a similar manner to ionic silver in the environment. Therefore, PNEC values for potassium dicyanoargentate are read across from the ionic silver REACH dossier.
Conclusion on classification
Experimental ecotoxicity data are not available for all trophic levels for potassium dicyanoargentate, but there is a large amount of data available for the components of the substance (silver and free cyanide). Therefore, in order to minimise unnecessary testing, a calculation approach was used for determining the toxicity of potassium dicyanoargentate to fish and algae using the extensive information that already exists on the toxicity of the metal ion and free cyanide, and on the speciation of potassium dicyanoargentate in ecotoxicity test solutions.
The most sensitive endpoint was determined to be Daphnia, with an experimental EC50 of 0.022 mg/L (Brixham 2012a). The acute ERV is ≤ 1 mg/L, therefore the test item is classified as hazardous to the aquatic environment with Acute Category 1 (see Fig. IV.4 of CLP Guidance version 5.0 (July 2017)). An acute M-factor of 10 is assigned (acute ERV of 0.022 mg/L (substance basis); see Table IV.1 of CLP Guidance version 5.0 (July 2017)).
For the long-term aquatic hazard, data are read accross from soluble silver. The chronic ERV of 0,0001 mg Ag/L corresponds to a chronic ERV of 0,00018 mg/L for KAg(CN)2. Therefore, the test item is classified as Category Chronic 1 (see Fig. IV.5 of CLP Guidance version 5.0 (July 2017)). A chronic M-factor of 100 assigned (see Table IV.1 of CLP Guidance version 5.0 (July 2017)).
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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