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EC number: 295-363-7 | CAS number: 92044-84-3
- 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
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Study period:
- 2013-05-21 to 2013-05-22
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2010-10-20
- Type of method:
- OECD harmonised ring method
Test material
- Reference substance name:
- Potassium 2-ethylhexanoate
- EC Number:
- 221-625-7
- EC Name:
- Potassium 2-ethylhexanoate
- Cas Number:
- 3164-85-0
- Molecular formula:
- C8H16O2.K
- IUPAC Name:
- potassium 2-ethylhexanoate
- Test material form:
- solid: crystalline
- Details on test material:
- - Name of test material (as cited in study report): Potassium 2-ethylhexanoate
- Molecular formula: C8H15KO2
- Molecular weight: 182.30 g/mol
- Physical state: Off-white crystalline solid
- Stability under test conditions: Assumed to be stable
- Storage condition of test material: Sealed from atmosphere at room temperature
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 47.63 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: standard deviation of 0.05 mN/m
Any other information on results incl. tables
Determination of the density
The density of the1 g/L aqueous solution of potassium 2-ethylhexanoate in double distilled water was determined in a preliminary measurement to be 1.012 g/cm³ (20.2 °C).
Temperature
The temperature range of the test solution during the whole measurements was 19.9 - 20.2 °C
The room temperature during these measurements was 19.6 - 20.5 °C
Time line of the study
After transfer of the test solution into the test vessel 110.9 minutes were needed to reach equilibrium at which 10 successive measurements with a standard deviation of 0.05 mN/m were possible
Surface tension of a 1 g/L aqueous solution of potassium 2-ethylhexanoate
The determination was carried out in ten successive measurements with a standard deviation ≤ 0.05 mN/m.
Measurement no.* |
Time** [min] |
Surface tension*** [mN/m] |
Temperature * [°C] |
1 |
104.5 |
47.72 |
19.9 |
2 |
105.3 |
47.68 |
20.0 |
3 |
106.0 |
47.66 |
20.0 |
4 |
106.7 |
47.64 |
20.0 |
5 |
107.4 |
47.60 |
20.0 |
6 |
108.1 |
47.63 |
20.0 |
7 |
108.8 |
47.61 |
19.9 |
8 |
109.5 |
47.62 |
20.0 |
9 |
110.2 |
47.59 |
20.0 |
10 |
110.9 |
47.55 |
19.9 |
MV |
- |
47.63 |
20.0 |
SD |
- |
0.05 |
0.05 |
MV = mean value
SD = standard deviation
*) of the last 10 measurements
**) Time from transfer of the test solution into the test vessel until end of each measurement
***) Values already corrected acc. to Harkins & Jordan
Validation
Applicant's summary and conclusion
- Conclusions:
- The surface tension of a 1 g/L aqueous solution of potassium 2-ethylhexanoate at 20 °C was determined to be 47.63 mN/m (standard deviation of 0.05 mN/m). Due to the fact that the surface tension is < 60 mN/m, the test item is classified as surface-active substance.
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