Registration Dossier
Registration Dossier
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EC number: 271-591-2 | CAS number: 68585-82-0
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Study period:
- from 02 Nov 2005 to 19 Apr 2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to an international guideline and according to GLP.
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
- Report date:
- 2006
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Version / remarks:
- and EU method A2 (Boiling temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: thermal analysis
Test material
- Reference substance name:
- Yttrium oxide
- EC Number:
- 215-233-5
- EC Name:
- Yttrium oxide
- Cas Number:
- 1314-36-9
- Molecular formula:
- O3Y2
- IUPAC Name:
- Yttrium (III) oxide
Constituent 1
Results and discussion
Boiling point
- Boiling pt.:
- > 400 °C
- Decomposition:
- no
Any other information on results incl. tables
- Deduction of boiling point: During the preliminary and main tests, no endothermic heat effect was observed; thus, preventing to deduce a boiling point.
- Appearance and weight of the test item: After both tests, the sample was still a white powder, loosing about 0.4 and 0.8% of its mass in preliminary and main tests respectively.
Applicant's summary and conclusion
- Conclusions:
- Yttrium oxide does not boil under the conditions of the test.
- Executive summary:
The boiling point of yttrium oxide was assessed using a thermal analysis, according to OECD Guideline 103. A test item amount of 16.82 mg was heated up from 25°C to 400°C at a rate of 20°C/min during a preliminary test. The quantities of heat absorbed or released were measured by Differential Scanning Calorimeter and recorded. In this test, no peak was observed, and the boiling point of the sample could not be deduced. The thermal analysis was repeated with 21.61 mg of test item in the same temperature range, but with the rise adjusted to 10°C/min. No endothermic reaction could be observed. In conclusion, yttrium oxide does not boil under the conditions of the test.
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