Registration Dossier
Registration Dossier
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EC number: 947-961-0 | CAS number: -
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23 February 2017 - 28 September 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: Visual inspection
- Adequacy of study:
- weight of evidence
- Study period:
- 23 February 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Information taken from a GLP-compliant study report on relative density in which the appearance and physical state of the test item was described based on visual inspection.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Visual inspection.
- GLP compliance:
- yes (incl. QA statement)
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- solid: particulate/powder
- Colour:
- white
- Substance type:
- inorganic
- Conclusions:
- Based on visual observation in the laboratory, the test item can be described as a white powder.
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:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- ytterbia stabilised yttrium disilicate
- Molecular formula:
- Yb2-xYxSi2O7
- IUPAC Name:
- ytterbia stabilised yttrium disilicate
- Test material form:
- solid: particulate/powder
- Details on test material:
- Name: ytterbium doped yttrium disilicate
Physical state: solid
Appearance: white powder
Further information on test material confidential.
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- > 600 °C
- Atm. press.:
- 101.325 kPa
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: No melting point was recorded up to 600°C.
Any other information on results incl. tables
Assay No. 1 (isotherm at 25°C for 5 min, heating ramp: 25°C to 600°C at 10°C/min):
No melting point of the test item was recorded up to 600°C.
Assay No. 2 (isotherm at 25°C for 5 min, heating ramp: 25°C to 600°C at 10°C/min):
The second assay was similar to the first one.
No melting point of the test item was recorded up to 600°C.
Applicant's summary and conclusion
- Conclusions:
- The melting behaviour of ytterbium doped yttrium disilicate was assessed according to the EU A.1 method and OECD test guideline 102 in compliance with GLP using Differential Scanning Calorimetry (DSC). No melting point of the test item was recorded up to 600°C.
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