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EC number: 273-729-7 | CAS number: 69012-29-9 By-product from the production of ferronickel from a complex ore. Consists primarily of oxides of aluminum, iron, magnesium and silicon.
- 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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Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Acute toxicity studies for fish on slags, ferronickel-manufg. are not available. A read-across approach was chosen to be followed, based on the individual constituents of the substance. Studies on the toxicity of trivalent Chromium, Nickel and soluble Aluminium showed that these substances produce toxic effects on fish at concentrations much higher than their maximum water solubility from ferronickel slags that was determined in a test (see endpoint 4.8). Calcium and Sulfur are the two most soluble elements in ferronickel slags, but their acute toxicity to fish is insignificant. Magnesium and iron are both of low solubility and low ecotoxicological activity, therefore they will not affect the resolution.
Key value for chemical safety assessment
Additional information
Brix et al. (2004) studied the acute toxicity of Ni to rainbow trout (Oncorhynchus mykiss). The authors concluded that acute Ni toxicity was not related to the disruption of ion regulation, while the results were in agreement with other similar studies. The EC50 that was determined was 20.8mg Ni/L. This value is significantly higher than the maximum concentration of Ni that is measured in water solubility and leachability tests (see endpoint 4.8 and NTUAa, 2011).
The acute toxicity of soluble trivalent Cr to Pimephales promelas was evaluated using metal salt of CrCl3.6H2O (Baral et al., 2006). The duration of the test was 48h and it derived an EC50 of 19.79mg Cr(III)/L and a NOAEC of 7.04 mg Cr(III)/L. The EC50value for trivalent Cr was higher than the measured concentrations of Cr in eluates of ferronickel slag. Thus, no acute effect is expected due to the release of Cr(III) from ferronickel slag.
There were no clear differences in survival time between fish exposed to Al rich medium with increased ionic strength and to Al rich medium only in a flow-through test system. There was a systematic increase in fish survival time from the first Al regime to the third Al regime (high residence time, equal to 90 min). The mean survival time was 16 h in the first Al regime, 34 h in the second Al regime (30 min residence time of Al before fish exposure) and 71 h in the third Al regime (90 min residence time of Al before fish exposure).
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