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Diss Factsheets
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EC number: 929-305-5 | 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)
Description of key information
Attempts were made to perform by HPLC and Shake Flask, but due to complexity of the UVCB, these methods were not possible.
The three main components were assessed separately by KOWWIN with a range of Log Kow - 2.04 to 1.26.
For purposes of risk assessment, the highest figure has been rounded to 1.3
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 1.3
- at the temperature of:
- 20 °C
Additional information
Partition Coefficient (n-Octanol/Water); no determination was possible according to Method A8 Partition Coefficient but HPLC or Shake Flask and partition therefore estimated using a computer-based atom fragment contribution method, KOWWIN, version 1.68 (September 2010), from U.S. Environmental Protection Agency.
Partition coefficient (log10 Pow) values for each of the three main test item components were estimated separately and these were Log Kow 1.26, -0.39 and -2.04.
Even taking into account potential inaccuracies in the model, especially for such a complex substance with nitrogen groups, other data including water solubility, suggest a low risk of bioaccumulation and although such estimate is not entirely satisfactory, it is considered to be sufficient. Independent review agreed with the impracticality of HPLC or shake flask estimates.
It is known that this class of substance will exhibit emulsifying properties when mixed with water and hydrophobic materials such as octanol and a shake flask test was not attempted. By aiding the dissolution of octanol in water, the results would have been unreliable.
Likewise, nitrogen-rich molecules will exhibit an overall charge and will be ionised at environmentally significant pH values. Attempts to pass this through HPLC columns in this form would lead to artificially high retention when compared with un-ionised reference substances. It may be possible to run HPLC assessments at pH > 11, but this has little environmental significance.
The use of modelling, even though on the un-ionised structures, does give an indication of potential risk of bioaccumulation. The miscibility in water and low estimated Log Kow suggest low risk.
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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