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EC number: 920-632-9 | CAS number: -
- 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

Carcinogenicity
Administrative data
Description of key information
complex metal containing substance
classification made based on CLP rules for mixtures
solubility of metal constituents is poor
in vitro bio-accessability tests, mimicking gastric fluids
Key value for chemical safety assessment
Justification for classification or non-classification
Nickel slag does contain minor constituents classified as a Category 1 carcinogen ( NiS ) at max actual levels of 0.04% thus much lower than the threshold of 0.1% triggering classification of the mixture for carcinogenicity Cat 1. It further does contain minor constituents classified as a Category 2 carcinogen but below 1.0 %. Therefore the nickel slag does not trigger classification for carcinogenicity.
The classification derived is applicable to all nickel slags.See end-point record and discussion above for detailed justifications.
The assessed samples and derived classifications are representative for typical nickel slags , across the industry, and defined within the concentration ranges outlined under IUCLID section 1.2 .
Self-classification of the UVCB substance (IUCLID Section 2.1 & 2.2) was performed based on the following outline:
1.Characterization
The substance is accurately described with elemental composition (typical concentrations and concentration ranges across production sites –IUCLID Section 1.2), and specific speciation data (mineralogical composition) obtained from the respective representative samples (IUCLID Section 4, in particular 4.23). This detailed information on the substance identity is used as a basis for the classification.
2. Classification by the rules for mixtures
The UVCB is considered as complex metal containing substance with number of discrete constituents (metals, metal compounds, non-metal inorganic compounds).
The classification is based on concentration thresholds referring to the classified constituents present in the UVCB substance. Specific concentration limits are taken into account.
This concept and classification rules are incorporated in easy to use IT tool which is used to classify the UVCB substance.
3. Bridging or Read-Across
Toxicological data are not available for the specific UVCB being evaluated. Considering variability in composition, read-across and bridging is applied by using representative mineralogical/speciation composition combined with the typical metal concentration (across companies) as a basis for the classification of the UVCB substance (chemical and mineralogical surrogates with similar origin/production process and physical/chemical properties (SeeIUCLID 1.4 for information on Sampling procedure).
4. Bioavailability consideration
Data from bio-accessibility test in solution that resembles gastric fluid are available and further confirm the classification.
See Arche Complex Metal Mixture classification calculator (copper version June 2010);MeCLAS webpage: www.meclas.eu
Additional information
The nickel slag is a complex metal containing substance. It mainly contains iron silicate and silicates of aluminum and calcium . Traces of metals exist in metal, mineral form or included in silicate phases.
Classification derived based on rules for mixtures:
Carcinogenicity: Not classified
Results from calculated classification are further supported (WoE) by consideration of physical chemical properties of the UVCB substance.
Chemistry and mineralogy of the slag (see IUCLID section 4.23 chemical and mineralogical characterization) were taken into account.
Water solubility (IUCLID section 4.8) and Sequential dissolutions (IUCLID 4.23 Chemical assays) furthermore confirmed species present and their solubility behavior.
Nickel slag does contain minor constituents classified as a Category 1 carcinogen ( NiS ) at max actual levels of 0.04% thus much lower than the threshold of 0.1% triggering classification of the mixture for carcinogenicity Cat 1. It further does contain minor constituents classified as a Category 2 carcinogen but below 1.0 %. Therefore the nickel slag does not trigger classification for carcinogenicity.
In vitro measurements of bio-accessibility in solvent that resembles gastric fluid performed according to ASTM D5517.07.(pH 1.5) The fraction of metals that solubilize under these conditions can be considered as worst case determinant of bio-assesability of metals contained in the slag.Results demonstrate reduced relative bio-accesabilty of metals (Cu 0.04, Ni 0.05, Co 0.06, dissolved concentrations of Pb and As were below detection limit) thus further confirm the classification.
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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