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EC number: 273-732-3 | CAS number: 69012-32-4 By-product of smelting of phosphate rock, silica and coke in manufacture of phosphorus.
- 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
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The water solubility of P-slag was studied using the dissolution/transformation protocol (OECD 29). Fluor and Silicium ions are present in solution in a concentration up to 1 mg/l. Fe, Al and Mn are below the detection levels in all cases.
Key value for chemical safety assessment
Additional information
Due to the low solubility in water the dissolution/transformation protocol was used to further evaluate the solubility of the constituents of P-slag. If the cristalline structure of P-slag would solve in water, the elements would be present as ions in solution.
Particles of P-slag (< 1mm) were added to a synthetic medium with pH 6.5 and 8.5 at loading rates of 1, 10 and 100 mg/liter and the concentrations were measured after 7 days. In a similar way 1 mg/l was added to water with pH 5.5 and 8.5 and concentrations were measured after 28 days.
In the solution containing 100 mg P-slag per liter, Si is the element detected at the highest level, around maximum 1 mg/l. Fluor is detected as well, at concentrations maximum circa 0.5 mg/l. With pH 8.5 the solved concentrations are almost half of the concentrations at pH 6.5. In the lower P-slag loading, Si and F concentrations were below detection levels.
Concentrations of other elements were below the detection level (Fe < 0.25 mg/l, Al < 0.05 mg/l, Mn < 0.01 mg/l) in all P-slag loadings.
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