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EC number: 239-590-1 | CAS number: 15541-60-3
- 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
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 December 2003 and 11 March 2004
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study conducted in accordance with an internationally recognised method
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Version / remarks:
- The stock test solution was prepared in water and not octanol due to low solubility of the substance in n-octanol.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- other: Ion chromatography - pyrophosphate analysis
- Type:
- log Pow
- Partition coefficient:
- -1.48
- Temp.:
- 22 °C
- pH:
- 6.9 - 7.2
- Type:
- log Pow
- Partition coefficient:
- < -4.18
- Temp.:
- 22 °C
- pH:
- 6.9 - 7.2
- Conclusions:
- The partition coefficient has been determined to be in the range -1.48 to <-4.18.
Reference
Sample Number |
n-Octanol/Water Volume Ratio |
Log Pow
|
Mean Log Pow
|
Organic component 1 2 3 4 5 6
|
7:1 7.1 31:1 31:1 15:1 15:1 |
-1.43 -1.37 -1.70 -1.52 -1.48 -1.45
|
-1.48 |
Inorganic component 1 2 3 4 5 6
|
7:1 7.1 31:1 31:1 15:1 15:1 |
<-4.18 <-4.18 <-4.18 <-4.20 <-4.19 |
<-4.18
|
Description of key information
The partition coefficient has been determined to be in the range -1.48 to <-4.18. The value of -1.48 is taken as the key value for the chemical safety assessment.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.48
- at the temperature of:
- 22 °C
Additional information
The partition coefficient has been determined as -to be in the range 1.48 to <-4.18. The value of 1.48 (for the organic component of MPP) is to be taken forward for the risk assessment, on the basis that the inorganic (pyrophosphate) component will hydrolyse and form inorganic phosphate salts that are already widely present in the human body and in the environment.
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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