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Diss Factsheets
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EC number: 433-240-3 | 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
Log Pow = 2.67 (fragment method;
Log Pow >1 according to log (solubility in n-octanol / solubiliy in water)
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.67
- at the temperature of:
- 20 °C
Additional information
A reliable study (RL1) compliant with GLP and considering relevant technical guidelines (OECD 107; OECD 117; EU-method A.8) was performed to determine the partition coefficient n-octanol/water (Pow) for the test item. Neither the HPLC-method according to OECD Guideline No. 117 nor the flask-shaking method according to OECD Guideline No. 107 were applicable for the determination of the partition coefficient of the test item. As described in the guidelines the flask shaking test is only applicable to water and n-octanol soluble substances. Therefore, based on the very low solubility of test item in water and in n-octanol the test could not be performed. A HPLC-method was not available.
Thus, the log Pow-value for the test item was
a) estimated from its solubility in n-octanol and in water as well as
b) calculated using a model calculation based on the theoretical fragmentation of the molecule into substructures.
According to a), in the present study, the n-octanol solubility of the test item was determined to be 0.195 mg/L. The water solubility of the test item was determined under RCC Project 742421 to be < 0.02 mg/I. Thus, the partition coefficient, log Pow, of of the test item was calculated to be:
log Pow = log (0.195 mg/L / <0.02 mg/L) = >1
As the water solubility is stated "below quantification limit", the true log Pow must be somewhat higerh than the value obtained with individual solubilities (i.e. >1). Therefore,
according to b), the log Pow of the test item was estimated by a model calculation based on the theoretical fragmentation of the molecule into suitable structures for which reliable log Pow values were used. The final result was obtained by summing the fragment values and the correction terms, resulting in log Pow = 2.7 for the test item.
In conclusion,the log Pow of the test item was estimated to be log Pow = 2.7using a model calculation, which is based on theoretical fragmentation.
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