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EC number: 247-668-1 | CAS number: 26402-26-6
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Remarks:
- - critical micellization concentration
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 4311: Anionic and non-ionic surface active agents - Determination of the critical micellization concentration - Method by measuring surface tension with a plate, stirrup or ring
- Version / remarks:
- 1979
- GLP compliance:
- no
- Type of method:
- other: Method by measuring surface tension with a ring
- Water solubility:
- 5.8 g/L
- Temp.:
- 20 °C
- Remarks on result:
- other: This result refers to the critical micellization concentration (c.m.c.) according to ISO 4311 (1979).
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: OECD Guideline study without GLP
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- ca. 330 g/L
- Temp.:
- 20 °C
- pH:
- 3.52
- Details on results:
- Due to the formation of a gel, the investigation was stopped after the preliminary test, and the water solubility was approximated to 330 g/L.
Please note:
It is likely that it is possible to create a gel with even higher concentrations of the test item. - Conclusions:
- Interpretation of results (migrated information): very soluble (> 10000 mg/L)
It is shown that the water solubility of the substance is below 1 mg/L. - Executive summary:
With 1.0 g of test item being mixed into 2 g of water, a gel with a total weight of 3.0 g has been formed. This is equivalent to 33% (w/w) of test item in solution/gel. Due to the fact, that the density of the gel is not known and that the formation of the gel is a continuous process and no discrete point can be identified at which dissolution in water switches to gelling, the water solubility can only be approximated to 330 g/L.
Please note:
It is likely that it is possible to create a gel with even higher concentrations of the test item.
The pH value of a 5% solution of the test item in water was 3.52, the tests were performed at 20 °C.
Referenceopen allclose all
Results
For both the preliminary test and the main test, the surface tension (σ [mN/m]) was plotted as a function of the logarithm of the concentration (log c).
From the preliminary test the c.m.c. was estimated to be between 2 g/L and 10 g/L.
The results of the main test are summarized in Table 1.
Table 1: Results of the main test
Concentration of test item [mg/L] |
log c |
σ [mN/m] |
mean σ [mN/m] |
2284 |
3.36 |
26.28 |
26.39 |
26.54 |
|||
26.36 |
|||
2936 |
3.47 |
25.29 |
25.29 |
25.28 |
|||
25.30 |
|||
3639 |
3.56 |
24.79 |
24.59 |
24.44 |
|||
24.55 |
|||
4601 |
3.66 |
24.34 |
24.40 |
24.33 |
|||
24.54 |
|||
5767 |
3.76 |
24.30 |
24.24 |
24.17 |
|||
24.25 |
|||
7334 |
3.87 |
24.44 |
24.40 |
24.42 |
|||
24.35 |
|||
9262 |
3.97 |
24.55 |
24.59 |
24.60 |
|||
24.61 |
The results of the preliminary test were plotted in the same graph as the main test results - see illustration.
In the resulting curve the c.m.c. corresponds to the point on the curve at which the surface tension is considerably lower than that at higher concentration. The c.m.c. is defined at the abscissa of the minimum of the curve, which is 5.8 g/L in this case.
Final result
According to ISO 4311 (1979) the critical micellization concentration of the test item SOFTISAN GC8 at 20 ⁰C was determined to be:
c.m.c.: 5.8 g/L
Description of key information
Due to formation of a gel, the water solubility could only be approximated to 330 g/L. For a better understanding of the behaviour of this surface active substance in a water solution, the critical micellization concentration (c.m.c) was determined and found to be 5.8 g/L at 20 °C.
Key value for chemical safety assessment
- Water solubility:
- 330 g/L
- at the temperature of:
- 20 °C
Additional information
With 1.0 g of test item being mixed into 2 g of water, a gel with a total weight of 3.0 g has been formed. This is equivalent to 33% (w/w) of test item in solution/gel. Due to the fact that the density of the gel is not known and that the formation of the gel is a continuous process and no discrete point can be identified at which dissolution in water switches to gelling, the water solubility can only be approximated to 330 g/L.
The critical micellization concentration (c.m.c.) at 20 °C of the test item was determined to be 5.8 g/L (ISO 4311, Method by measuring surface tension with a ring).
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