Registration Dossier
Registration Dossier
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EC number: 240-514-4 | CAS number: 16469-17-3
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14 November 2016 - 6 December 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- column elution method
Test material
- Reference substance name:
- Neodymium trihydroxide
- EC Number:
- 240-514-4
- EC Name:
- Neodymium trihydroxide
- Cas Number:
- 16469-17-3
- Molecular formula:
- H3NdO3
- IUPAC Name:
- neodymium trihydroxide
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Name of test material (as cited in study report): neodymium trihydroxide
- Physical state: solid
- Appearance: clear blue powder (purple under UV light)
Constituent 1
Results and discussion
Water solubility
- Key result
- Water solubility:
- 1.8 mg/L
- Conc. based on:
- act. ingr. (dissolved fraction)
- Remarks:
- neodymium trihydroxide, result calculated based on dissolved Nd measurements
- Temp.:
- 20 °C
- pH:
- 6
- Remarks on result:
- other: 2-h equilibration, flow rates of 12.5 mL/h and 25 mL/h applied
- Details on results:
- Result of test 1: 1.805 mg Nd(OH)3/L (at 25 mL/h and pH 6.0)
Result of test 2: 2.117 mg Nd(OH)3/L (at 25 mL/h and pH 6.0)
Result of test 3: 1.515 mg Nd(OH)3/L (at 12.5 mL/h and pH 6.0)
Applicant's summary and conclusion
- Conclusions:
- The water solubility of the test substance, neodymium trihydroxide, was determined according to OECD guideline 105 and the EC A6 method (column elution method) and was found to be 1.8 mg/L Nd(OH)3 (recalculated based on dissolved Nd measurements) at pH 6 and 20°C.
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