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EC number: 266-002-0 | CAS number: 65996-69-2 The fused substance formed by the action of a flux upon the gangue of the iron-bearing materials charged to a blast furnace and upon the oxidized impurities in the iron produced. Depending upon the particular blast furnace operation, the slag is composed primarily of sulfur and oxides of aluminum, calcium, 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
Density
Administrative data
Link to relevant study record(s)
Description of key information
The true density of solid slag is approximately 2.7 - 4 g/cm³ at ambient temperature.
Apperant density: 1.9 - 3 g/cm³
Bulk density: 0.7 - 1.4 g/cm³
From the same molten slag, the product obtained by rapid cooling (GBS)
is less dense than the product obtained by slow cooling (ABS)
Key value for chemical safety assessment
- Relative density at 20C:
- 3
Additional information
The density of solid slag is 3 - 4 kg/L at ambient temperature (Krajewsky and Krueger 1984).
BOS has a density >3.2 g/cm³ and a bulk density 1.5 - 1.6 g/cm³. (FEhS 2000 (Geiseler, Drissen, Kuehn, Schrey))The density of SMS is 3 g/cm³, the bulk density is 1.4 g/ cm³. (FEhS (Geiseler) 1997)
The density of EAF C is 3.4 g/cm³, the bulk density is 1.5 g/ cm³. (FEhS (Geiseler) 1997)
EAF S was measured to be 3.08 g/cm³ (3.14…3.18 for LMA 0 - 8 mm and LMA 0 - 32 mm), and the bulk density 1.2 g/cm³ (Parviainen,Tikkakoski, Kallio, Holappa, Kujala, Roininen 2007)
For granulated blast furnace slag (GBS) the following data are reported by Euroslag (2003):
· true density: 2.796 - 3.070 g/cm³
· apparent density: 2.021 - 2.843 g/cm³
· bulk density: 0.689 - 1.427 g/cm³ (porosity: 2.5 - 31.2 % v/v, grain size < 0.5 mm: 3.6 - 78.6 % w/w, grain size < 3.2 mm: 81.1 - 100.0 % w/w)
These data are supported by results of Ehrenberg (2001), who measured densities of GBS of 2.9 g/cm³, and a bulk density of 1.3 g/cm³.
GBS consists predominantly of glass phases. Due to the low order of the molecules and ions in the liquid, the product obtained by rapid cooling (GBS) is less compact than the product obtained by slow cooling (ABS) with tight clusters in crystal lattices. For slag from the same manufacturer, the compacted apparent density of ABS is 3 g/cm3, the compacted apparent density of GBS is 2.7 g/cm3(Tossavainen and Lind 2005).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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