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EC number: 500-016-2 | CAS number: 9004-98-2 1 - 2.5 moles ethoxylated
- 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
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- Nanomaterial surface chemistry
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- Nanomaterial pour density
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- 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
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- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
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- Additional toxicological data

Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2 Dec 2019 - 15 Jan 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- GLP compliance:
- no
- Type of method:
- column elution method
- Water solubility:
- < 40 µg/L
- Temp.:
- 20 °C
- pH:
- 6.2
- Remarks on result:
- other: below the detection limit of the analytical method
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- < 1 g/L
- Temp.:
- 20 °C
- pH:
- 3.8
- Remarks on result:
- other: The test substance forms emulsions at concentrations below 1,00 g/L in MilliQ water
- Details on results:
- Measurement not applicable: The test substance forms emulsions at concentrations below 1,00 g/L in MilliQ water at 20°C and pH= 3.8
- Conclusions:
- Interpretation of results (migrated information): moderately soluble (100-1000 mg/L) the substance gives origin to emulsions at the concentration of 1g/L at 20°C and pH=3.8
- Executive summary:
The substance (Z)-9 -Octadecen-1 -ol ethoxylated gives origin to emulsions at the concentration of and below 1 g/L at 20°C and pH=3.8
Referenceopen allclose all
Preliminary test:
Experiment |
Water [mL] |
Test Item [mg] |
Result |
A |
2.0 |
96.5 |
Hazy mixture |
B |
8.0 |
51.3 |
Hazy mixture |
C |
8.0 |
4.9 |
Hazy mixture |
D |
25 |
2.9 |
Hazy mixture |
E |
100 |
6.4 |
Hazy mixture |
Based on these results, the column elution method was considered suitable for the determination of the water solubility of the test item.
Main test results
The concentrations of the test item in different test solutions were calculated automatically using the equation of the calibration curve. The results are shown in the following table (pH = 6.2):
Flow rate (mL/h) |
Fraction No. (combined aliquots) |
Concentration of the test item (µg/L) |
25.0 |
1(1-2) |
< 40 |
2(3-4) |
< 40 |
|
3(5-6) |
< 40 |
|
4(7-8) |
< 40 |
|
5(9-10) |
< 40 |
|
6(11-12) |
< 40 |
|
7(13-14) |
< 40 |
|
8(15-16) |
< 40 |
|
12.5 |
1(1-2) |
< 40 |
2(3-4) |
< 40 |
|
3(5-6) |
< 40 |
|
4(7-8) |
82.5 |
|
5(9-10) |
< 40 |
|
6(11-12) |
< 40 |
|
7(13-14) |
< 40 |
|
8(15-16) |
< 40 |
In most of the fractions, the concentration of the test item is below
the detection limit of the analytical method. In one fraction, where the
test item was detected, it was likely due to droplets breaking through
the column. For this reason, this value was not considered as valid
result.
Measurement:
Temperature: 20 °C
pH: 3.8
Equilibration time for solubilization: 1 week
Sample volume: 0.1 ml
Volume of water: 100 ml
Description of key information
The water solubility of the substance is < 0.40 µg/L at 20 °C, pH 6.2.
Key value for chemical safety assessment
- Water solubility:
- 0.4 µg/L
- at the temperature of:
- 25 °C
Additional information
The water solubility has been measured using column elution method (OECD 105). In an older study the water solubility was measured to be < 1 g/L, what was not precise because of the emulsion formation, but in principle supporting.
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