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EC number: 273-925-2 | CAS number: 69227-11-8 A scum formed on the surface of molten copper.
- 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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Endpoint summary
Administrative data
Description of key information
‘Lead dross copper rich’ is a grey/black odourless solid (at 20°C and 101.3 kPa) in powder form. The density will vary according to the precise composition of the sample. The density of the tested sample was 8.14 g/cm3. In the melting point test, the sample started to melt at 311 °C. Consequently, boiling point and vapour pressure cannot be determined. The water solubility test shows dissolution of some metal ions. Three samples were tested for granulometry, a D50 = 56 µm, 99 µm and 200 µm were determined. However, both the results of the water solubility test and the granulometry test should be used with caution.
There is no evidence of physical hazards in terms of (auto) flammability, explosivity and oxidising properties.
Studies regarding flash point, partition coefficient, surface tension, dissociation constant, stability in organic solvents, and viscosity do not need to be conducted.
Waivers are in place for all these endpoints.
Additional information
'Lead-dross, copper-rich' is a solid at 20°C and 101.3 kPa produced by chemical reactions during the cooling of molten lead bullion to temperatures in the range >330°C - 450°C. Sulphur may be added if the input feed is deficient but is not always required. The resultant sulphidic precipitate formed on the surface is removed by skimming. 'Lead, dross, copper-rich' is composed primarily of metallic lead, lead sulphides and copper sulphides.
Note: Substances pre-registered under the EC numbers 305-408-5 and 273-925-2 were merged as a result of sameness discussions within the relevant SIEFs. They are collectively identified under the name 'Lead, dross, copper rich' and the EC number 273-925-2.
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.
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