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EC number: 308-516-0 | CAS number: 98072-61-8
- 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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Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
A 30 day BAF bioavailable value of 0.62 ± 0.11 was reported for silver nitrate bioaccumulation in the earthworm Eisenia fetida.
Key value for chemical safety assessment
Additional information
Silver
Coutris et al. (2012) used neutron activated soluble silver (silver nitrate) to assess the uptake, excretion and bio-distribution of silver in the earthwormEisenia fetidaexposed in standard OECD artificial soil (pH 5.95) amended with spiked, air dried, horse manure (0.55 ± 0.15 µg/g dissolved silver). A 30 day BAFbioavailablevalue of 0.62 ± 0.11 was reported.
Summary of available data for uncoated and coated nanosilver
Bioaccumulation in terrestrial invertebrates
Coutris et al. (2012) used neutron activated nanosilver particles (20.2 ± 2.5 nm by TEM) and soluble silver (silver nitrate) to assess the uptake, excretion and bio-distribution of silver in the earthwormEisenia fetidaexposed in standard OECD artificial soil (pH 5.95) amended with spiked, air dried, horse manure (0.55 ± 0.15 µg/g dissolved silver; 0.77 ± 0.15 µg/g nanosilver). 30 day BAFbioavailablevalues of 0.31 ± 0.12 and 0.62 ± 0.11 were reported for nanosilver particles and ionic silver, respectively. Ionic silver was approximately twice as bioavailable as nanosilver. Silver accumulated from soluble salts and nanoparticles was excreted rapidly.
Hunde-Rinke and Klawonn (2013) also measured bioaccumulation of nanosilver (NM-300K, 15 nm particle size) withEisena fetida. Worms were exposed to silver via either soil or feed in a long-term (28 day) chronic toxicity study. No depuration phase was included and measurements were made at 28 days only. Despite these limitations, a bioaccumulation factor (BAF) of 0.52 can be calculated from silver accumulation observed in the lowest test concentration (13.43 mg/kg dry weight) of the soil exposure after 28 days (no adverse effects were observed on survival or reproduction at this nanosilver concentration). It is not clear if steady-state concentration was achieved after this exposure. Exposures to higher concentrations of silver in soil (by factors of up to 13), whilst resulting in toxicity, did not result in broadly greater accumulation of silver. It is unclear if the silver was located in the tissues or the gut of the worm. These results compare favourably to those reported by Coutris et al. (2012). No comparative exposure to ionic silver was conducted.
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