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EC number: 274-778-7 | CAS number: 70693-62-8
- 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:
- 2001-02-22 - 2002-01-17
- Reliability:
- 1 (reliable without restriction)
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- no
- Principles of method if other than guideline:
- NA
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- < 0.3
- Temp.:
- 20 °C
- pH:
- ca. 1
- Details on results:
- pH dependence is not expected.
- Conclusions:
- The partition coefficient (log Pow) of the test substance Oxone Monopersulfate compound was determined to be < 0.3 at 20°C. A dependence on the pH values is not expected.
- Executive summary:
The partition coefficient (log Pow) of the test substance Oxone® Monopersulfate compound was determined to be < 0.3 at 20 °C.
In order to correlate the measured capacity factor (k) of the test material with its log Pow, two reference compounds were selected in order to demonstrate that they were themselves retained under the experimental conditions employed.
Reference
Description of key information
In accordance with column 2 of REACH Annex VII, the determination of the partition coefficient in n-octanol/water (required in section 7.8) does not need to be conducted for inorganic substances. However, for hypothetical / theoretical considerations the results of one key study and one supporting study were taken for estimation of the partition coefficient.Potassium peroxomonosulfate (2 KHSO5), potassium hydrogen sulfate (KHSO4) and potassium sulfate (K2SO4) (CAS# 70693 -62 -8). The calculation was done by using the programme KOWWIN, Log Octanol-Water Partition Coefficient Program, v1.67 (© 2000 U.S. EPA). The calculated log Pow for Potassium peroxomonosulfate (CAS# 10058-23-8) was - 3.90.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -3.9
- at the temperature of:
- 25 °C
Additional information
For hypothetical / theoretical considerations the results of one key and one supporting study were taken for estimation of the partition coefficient. In an experimental study the partition coefficient of the test substance was determined to a log Pow of < 0.3 at 20 °C and pH ~1 applying HPLC. A dependence on the pH range was not expected. Additionally, a calculation of the log Pow was performed for Potassium peroxomonosulfate (CAS# 10058-23-8) but not for the triple salt comprising Potassium peroxomonosulfate (2 KHSO5), potassium hydrogen sulfate (KHSO4) and potassium sulfate (K2SO4) (CAS# 70693 -62 -8). The calculation was done by using the programme KOWWIN, Log Octanol-Water Partition Coefficient Program, v1.67 (EPIWIN v4.0, 2008). Although QSAR models like KOWWIN are not able to robustly estimate log Pow values of inorganic substances, the value provided for Potassium peroxomonosulfate (CAS# 10058-23-8) (log Pow = - 3.9) was in the range expected for inorganic salts.
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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