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EC number: 273-793-6 | CAS number: 69029-47-6 Gold and silver bullion.
- 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
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Standard guideline, follows principles of GLP, acceptable without restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Test Guideline No 29 (2001)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- according to the principles of GLP
- Type of study / information:
- 24-h transformation dissolution pre-test
Test material
- Reference substance name:
- Dore
- EC Number:
- 273-793-6
- EC Name:
- Dore
- Cas Number:
- 69029-47-6
- Molecular formula:
- Not available
- IUPAC Name:
- dioxocopper antimony arsenic gold selenium silver tellurium λ²-plumbane
- Reference substance name:
- Doré (pure)
- IUPAC Name:
- Doré (pure)
- Details on test material:
- Batch: 881929
Sampling date: 17/02/2010
Manufacturer: Aurubis AG
Active ingredients: Silver, arsenic, copper, nickel, lead, antimony and zinc
Physical form: Solid (tiny pieces <1mm)
Colour: Metallic, silver
Storage: Room temperature; in the dark
Expiry date: Stable over time
Safe handling precautions: Usual personal protective equipment
Constituent 1
Constituent 2
Results and discussion
Any other information on results incl. tables
The determination of the metals in the test medium at pH 6 showed a measurable concentration for zinc (2.50 μg Zn/L) probably caused by the used buffering system. This value was also measured in the blank control samples at pH 6 and therefore has been subtracted from the zinc values measured in the test item vessels.
pH 6
In the test item vessels of the 24 hour pre-test at 100 rpm at pH 6, no amounts of dissolved arsenic, nickel, antimony and zinc have been detected.
For the metal silver a very small amount of 0.03 μg Ag/L was detected with a variation coefficient of 30%. The measured value is so small it can be considered that this metal has not been dissolved in the test medium.
The average concentration of lead measured in the test medium was 0.39 μg Pb/L with a variation coefficient of 14%.
An average value of 76.1 μg Cu/L was obtained with a variation coefficient of 20%. This between test item vessel variation falls just within the quality criterion of 20%.
pH 8
In the test item vessels of the 24 hour pre-test at 100 rpm at pH 8, no amounts of dissolved silver, arsenic, nickel, lead, antimony and zinc have been detected. However, in replicate 4, an average value of 0.38 μg Ni/L with a variation coefficient of 70% have been calculated.
An average value of 38.6 μg Cu/L was obtained with a variation coefficient of 10%. This value is significantly lower than the value measured in the 24 hout pre-test at 100 rpm at pH 6.
Applicant's summary and conclusion
- Conclusions:
- The worst case pH defined in this test is pH 6. Silver, copper and lead are the only elements which showed dissolution above detection limit and may be important in the design of a full test for classification purposes. The results can be assumed reliable because the test conditions stayed constant during the experiment.
- Executive summary:
The worst case pH defined in this test is pH 6. Silver, copper and lead are the only elements which showed dissolution above detection limit and may be important in the design of a full test for classification purposes. The results can be assumed reliable because the test conditions stayed constant during the experiment. This study is considered reliable and acceptable for use for this endpoint.
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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