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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
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Diss Factsheets
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EC number: 231-768-7 | CAS number: 7723-14-0
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
Elemental phosphorus contained in alloys has a very low water solubility. Transformation dissolution testing of ferro-phosphorus in accordance with OECD guideline 29, demonstrated extremely low solubility levels of Fe and P at 7 days, pH 6 and 100 mg Fe-P dosing per litre (< 5 µg P/l and < 1 µg Fe/l).
Elemental phosphorus is thermodynamically unstable in the presence of water and oxygen, and white phosphorus will react very fast to produce higher oxidation states of phosphorus in water. The estimated half-life for hydrolysis at ambient temperature is around 84 hours. The estimated half-lifes of white phosphorus at ambient temperatures due to a combination of hydrolysis and oxidation reaction are around 42 hours in air-saturated water and 56 hours in non air-saturated water. Half-life of white phosphorus in distilled water varies between 0.85 hours and 20 hours.
The speciation of the released soluble phosphorus is critical but difficult to assess given the low levels of soluble phosphorus which are close to or even below the detection limit of classical analytical techniques. Range finding tests with the most sensitive trophic level conducted to clarify the potential speciation of the released P-form for WFD and local permit requirements, indicate that the released form does not correspond with the toxic white phosphorus form. Further investigations are ongoing and would be equally useful for the REACH registration to demonstrate the chemical species released from the alloys and confirming the relevance of the justification of the read across from phosphates (PO4).
In conclusion, the releases of phosphorus from the alloys are extremely low and are expected to transform in the environment into soluble phosphates. The environmental fate and ecotoxicity endpoints are consequently based on the non-toxic soluble phosphates form.
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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