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EC number: - | 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
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From December 15, 2018 to March 6, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: HJ/T 153-2004 “The Guidelines for the Testing of Chemicals, Physical-Chemical Properties and Physical Hazards”, the second version, No.107 (OECD Guidelines for Testing of Chemicals No.107 "Partition Coefficient (n-octanol/water): Shake Flask Method"
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- Sulfonic acids, C16-alkane hydroxy and C16-alkene, potassium salts
- Cas Number:
- 2210238-42-7
- IUPAC Name:
- Sulfonic acids, C16-alkane hydroxy and C16-alkene, potassium salts
- Test material form:
- solid
- Remarks:
- This solid sample was obtained from the original liquid form by removing water.
- Details on test material:
- CAS number: 2210238-42-7
Constituent 1
- Specific details on test material used for the study:
- -Storage conditions
Store container tightly closed in well-ventilated place. Store in corrosive resistant container with a resistant inliner. Store locked up. Don't store with acids.
-Test item stability under storage conditions
Stable in container after opening. Stable in water and in light. Stability in soil is not applicable.
Results and discussion
Partition coefficient
- Key result
- Type:
- log Pow
- Partition coefficient:
- 0.17
- Temp.:
- 20 °C
- Remarks on result:
- other: Pow: 1.47
Any other information on results incl. tables
Test Results
Took and diluted the test solution, then determine the concentrations of the test substance under the analysis condition. The test results showed that the solubility of C16K in n-octanol was 527.74 g・kg-1, as shown in Table 3.
Table 3 Solubility of n-octanol analysis test results with C16K
Added amount (g) | Equilibrium time | Weight of weighed supernatant m (g) | Measured concentrations ci (µg・mL-1) | Volume V(mL) | Dilute times | Actual concentrations (g・kg-1) | Average solubility (g・kg-1) |
23.25 | 24h | 0.01004 | 53.29 | 100 | 1000 | 530.78 | 527.74 |
24.12 | 48h | 0.01025 | 51.80 | 100 | 1000 | 505.37 | |
25.08 | 72h | 0.01056 | 57.77 | 100 | 1000 | 547.06 |
According to the solubility of the test substance in water measured in the water solubility test was 359.18 g・kg-1 , Substituted in Formula (2), and figured out the value of Pow.
Pow = 527.74 / 359.18 = 1.47
lgPow = 0.17
Deviation
When determining the solubility of the tested substance in water-saturated n-octanol solution, it was observed by naked eyes that all the tested substances were completely dissolved in n-octanol after shaking at 30℃ for 24 hours. It was necessary to continue to add test substance into flasks, and the test time was extended for 24 hours. The test results were judged according to whether the concentration difference the last two measurements was less the 15%, and it did not affect the final test results.
Applicant's summary and conclusion
- Conclusions:
- The partition coefficient (n-octanol/water) of the registered substance was determined to be Pow = 1.47, lgPow = 0.17, at 20℃.
- Executive summary:
-Objective
The aim was to determine partition coefficient (n-octanol / water) of C16K, and being an important parameter for environmental assessment.
-Test guideline
HJ/T 153-2004 “The Guidelines for the Testing of Chemicals, Physical-Chemical Properties and Physical Hazards”, the second version, No.107 (OECD Guidelines for Testing of Chemicals No.107 "Partition Coefficient (n-octanol/water): Shake Flask Method"
-Calculation method
Since C16K was a surfactant material, according to the guidelines, the partition coefficient (Pow) value was calculated, using the solubility of C16K in water and the solubility in n-octanol alone.
-Result
The test was carried out according to the water solubility test, and the solubility of the test substance in water-saturated n-octanol was 527.74 g・kg-1 as measuerd by a flask method. Combined water solubility test resulting (solubility in water was 359.18 g・kg-1), the partition coefficient (n-octanol/water) of C16K at 20℃ was calculated in results of Pow = 1.47, lgPow = 0.17.
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