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Diss Factsheets
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EC number: 701-164-2 | CAS number: -
- 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:
- 19 May 2017 - 16 July 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - HPLC Method)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7570 (Partition Coefficient, n-octanol / H2O, Estimation by Liquid Chromatography)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Remarks:
- The determination was carried out by the HPLC Method, using a procedure designed to be compatible with Method A.8 (EC) No 440/2008 of 30 May 2008, Method 117 of the OECD Guidelines for Testing of Chemicals, 13 April 2004, and Method 830.7570 of the OCSPP
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- 4.58 - 5.44
- Remarks on result:
- other: For the amine components
- Key result
- Type:
- log Pow
- Partition coefficient:
- 5.88 - 6.5
- Remarks on result:
- other: For the sulfonate components
- Conclusions:
- The patition coefficient of the test material was determined to be log Pow = 4.58 to 5.44 for the amine components and Log Pow = 5.88 to >6.5 for the sulfonate components.
- Executive summary:
A study was carry out to determine the partition coefficient of the registered substance according the HPLC Method (OECD 117) and GLP. The partition coefficient of the test material was determined to be 3.77 x 10^4 to 2.77 x 10^5 (log Pow = 4.58 to 5.44) for the amine components and 7.60 x 10^5 to greater than 3.16 x 10^6 (Log Pow = 5.88 to >6.5) for the sulfonate components using the HPLC method, designed to be compatible with A.8 Partition Coefficient of Commission Regulation No 440/2008, Method 117 of the OECD Guidelines for Testing of Chemicals and Method 830.7570 of the OCSPP Guidelines.
Reference
The result from the preliminary test indicated that the HPLC method was suitable for determination of partition coefficient for this test item.
Normally testing on ionizable substances would be performed on the unionized form; however, due to the expected values of the dissociation constants for the test item this would involve using a mobile phase pH of less than 0 for the sulfonate components and greater than 12 for the amine components, which is not practical when using an HPLC system. As all the components of the test item are ionized over the normal environmental pH range it was considered acceptable to perform the test on the ionized forms. The mobile phase was however acidified to de-activate free silanol groups on the column which otherwise would have caused secondary interactions with the amine groups and thus, poor peak shape.
The chromatography of the test item showed several peaks with a well-defined and reproducible retention times. The HPLC method was therefore considered to be suitable for the purpose of the study. Based on the chromatographic data, the test item was considered to be stable during the test procedure.
As the test item components were detected using an MS detector, which was connected in series after the UV detector used for standard detection there is a slight retention time lag between the two detectors. The lag time between the detectors was determined to be 0.060 minutes; therefore, the retention time for sample peaks detected at the MS detector were reduced to align them with the retention time of the standards.
Description of key information
An experimental study was carried out to determine the partition coefficient of the registered substance according the HPLC Method (OECD 117) and GLP. The partition coefficient of the test material was determined to be 3.77 x 10^4 to 2.77 x 10^5 (log Pow = 4.58 to 5.44) for the amine components and 7.60 x 10^5 to greater than 3.16 x 10^6 (Log Pow = 5.88 to >6.5) for the sulfonate components using the HPLC method.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 6.5
Additional information
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.