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EC number: 701-039-2 | CAS number: 156324-78-6
- 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:
- 1993-12-06 to 1994-04-20
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- According to ECHA Guidance R.7a none of the experimental methods, that are available for the determination of partition coefficient, are very well suited for surface active substances. However, this study worked well, is considered to be valid and used as key study rated with RL2.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - Shake Flask Method)
- Version / remarks:
- 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 1994-03-16
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- gas chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- 3.55
- Temp.:
- 22 °C
- pH:
- 6.1
- Conclusions:
- According to Council Directive 92/69/EEC A.8, the log Pow of the test item is 3.55 using the flask method.
The calculated log Pow of the test item is 3.27 (KOWWIN, vers. 1.68).
Reference
The preliminary test determined the partition coefficient to be approximately greater than 556, log Pow > 2.75.
Results
Sample number |
Volume of n-octanol (mL) |
Volume of water (mL) |
Total weight (mg) |
n-octanol phase |
Water phase |
|||
Analysed concentration (mg/L) |
Total weight (mg) |
Analysed concentration (mg/L) |
Total weight (mg) |
pH |
||||
1 |
20 |
120 |
38.3 |
1.94 x 10³ |
38.9 |
0.583 |
7.00 x 10-² |
5.9 |
2 |
20 |
120 |
38.3 |
1.94 x 10³ |
38.8 |
0.565 |
6.78 x 10-2 |
6.1 |
3 |
40 |
120 |
76.7 |
1.93 x 10³ |
77.1 |
0.535 |
6.42 x 10-2 |
6.2 |
4 |
40 |
120 |
76.7 |
1.93 x 10³ |
77.3 |
0.500 |
6.00 x 10-2 |
6.0 |
5 |
80 |
120 |
153 |
1.93 x 10³ |
154 |
0.547 |
6.56 x 10-2 |
6.1 |
6 |
80 |
120 |
153 |
1.95 x 10³ |
156 |
0.819* |
9.83 x 10-2* |
6.1 |
* This value has been ignored due to its erroneous nature.
pH of n-octanol saturated water: 6.1
Temperature: 22.0 ± 0.5 °C
Calculations
Sample number | n-octanol / water volume ratio |
Partition coefficient |
Log10 Pow | Mean partition coefficient |
1 2 |
1:6 | 3.33 x 10³ 3.44 x 10³ |
3.52 3.54 |
3.38 x 10³ |
3 4 |
1:3 | 3.60 x 10³ 3.86 x 10³ |
3.56 3.59 |
3.73 x 10³ |
5 6 |
2:3 |
3.52 x 10³ - |
3.55 - |
3.52 x 10³ |
Mean = 3.55 x 10³ Log10 Pow = 3.55 Standard deviation = 202
Comment:
The peak height of each standard associated with a particular sample was corrected to nominal concentration and the mean value taken prior to the calculation of the sample concentration.
Description of key information
The log Pow of the test substance is 3.55.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.55
- at the temperature of:
- 22 °C
Additional information
The n-octanol/water partition coefficient was determined according to Council Directive 92/69/EEC A.8, flask method. The study was performed in compliance with GLP.
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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