Registration Dossier
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EC number: 234-386-9 | CAS number: 11137-98-7
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:
- 26 July 2018 - 21 August 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7840 (Water Solubility)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- column elution method
- Key result
- Water solubility:
- 0.013 mg/L
- Conc. based on:
- test mat. (dissolved fraction)
- Remarks:
- based on Al analysis
- Temp.:
- 20 °C
- pH:
- >= 7.4 - <= 7.5
- Details on results:
- Mean concentration in the water samples (n=10) obtained at the flowrate of 24 mL/h was 0.014 mg/L. CV = 8.3%.
Mean concentration in the water samples (n=10) obtained at the flowrate of 12 mL/h was 0.011 mg/L. CV = 6.8%.
The maximum difference on the mean values at both flow rates was ≤ 30% (i.e. 25%). Average of two flow rates: 0.013 mg/L.
The coefficient of variation (CV) (n=10) was ≤ 30% at both flow rates. It demonstrated that the system was in equilibrium at all flow rates. - Conclusions:
- The water solubility of the substance at 20°C was determined to be approximately 0.013 mg/L.
- Executive summary:
The water solubility of the substance was determined using the column elution method in a GLP study according to EC A.6, OECD 105 and OPPTS 830.7840.
Quantification was performed by ICP-MS (based on Al). The water solubility of the substance at 20°C was determined to be approximately 0.013 mg/L (average of two flow rates - 24 mL/h and 12 mL/h, measured value is < LOQ of the method and obtained through extrapolation of the calibration curve).
The coefficient of variation (CV) (n=10) was ≤ 30% at both flow rates.
The maximum difference on the mean values at both flow rates was ≤ 30%.
The pH of the aqueous samples was 7.4 -7.5.
Reference
The turbidity of the eluates was < 0.2 NTU. According to this, no undissolved particles were detected in the eluates.
No test item was detected in the samples from the blank column.
Description of key information
The water solubility of the substance at 20°C was determined to be approximately 0.013 mg/L.
Key value for chemical safety assessment
- Water solubility:
- 0.013 mg/L
- at the temperature of:
- 20 °C
Additional information
Determined in a GLP-compliant study according to EC A.6, OECD 105 and OPPTS 830.7840 using the column elution method.
The reported measured value is < LOQ of the method and was obtained through extrapolation of the calibration curve.
Therefore the reported water solubility should be regarded as an estimation.
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