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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 231-887-4 | CAS number: 7775-09-9
- 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
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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:
- 2002-2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Study was carried out according to generally valid and internationally accepted testing guidelines and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Version / remarks:
- 1989
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Version / remarks:
- 1992
- Deviations:
- no
- Principles of method if other than guideline:
- An estimate of the maximum solubility of the test item in n-octanol was performed by mixing the test item with different amounts of n-octanol for approximately 1 hour at room temperature away from light. After shaking a visual assessment of solubility was made. The solubility in water of the test item was previously determined (7775-09-9, Water solubility, Groult, 2004, RS-28186 PSE).
- GLP compliance:
- yes
- Type of method:
- estimation method (solubility ratio)
- Remarks:
- preliminary test, estimation method
- Partition coefficient type:
- octanol-water
- Type:
- log Pow
- Partition coefficient:
- < -2.9
- Temp.:
- 20 °C
- Remarks on result:
- other: pH not provided
- Type:
- Pow
- Partition coefficient:
- < 0.001
- Temp.:
- 20 °C
- Remarks on result:
- other: pH not provided
- Conclusions:
- Pow < 0.001 and log Pow < -2.9
- Executive summary:
The partition coefficient of test item was determined acccording to OECD guideline 117 / EU method A.8 based on the estimation method (solubility ratio) and under GLP.
Water solubility was determined in section 4.8 as 717 g/L at 20°C and n-octanol solubility was determined as < 1g/L by visual assessment of mixing solutions of test item in n-octanol at different concentrations after shaking for approximately 1 hour at room temperature away from light. Finally, the partition coefficient of the test item was determined as log Pow < -2,9.
This data is considered as a key data.
Reference
The solutions of the test item in n-octanol were all saturated. The preliminary test indicated that the test item was weakly soluble in n-octanol
(< 1 g/L).
Estimation based on the individual solubilities of the test item in n-octanol and water:
Pow = Coctanol / Cwater: < (1/717) this is < 0.001and log Pow < -2.9. The HPLC method or shake-flask method were not applicable (log Pow < -2.9) at 20 degrees Celcius.Consequently, the test was considered to be complete. No data on pH and no buffer solution was used.
Description of key information
Pow< 0.001 and
log Pow< -2.9
Weakly soluble in n-octanol
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -2.9
- at the temperature of:
- 20 °C
Additional information
A fully reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. It is considered as a key study.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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