Registration Dossier
Registration Dossier
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EC number: 701-438-1 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010-08-03 to 2010-11-19
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- 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)
- Remarks:
- signed 2010-03-22
- Type of method:
- capillary method
- Specific details on test material used for the study:
- Appearance: solid
Storage conditions: room temperature - Decomposition:
- yes
- Decomp. temp.:
- ca. 250 °C
- Remarks on result:
- other: No evidence of melting
- Conclusions:
- The test substance, Fe3P, was found to decompose from approximately 250°C without melting.
Reference
In the preliminary trial, the test substance was observed to darken from approximately 300ºC, with no sign of melting. As it was considered difficult to visually discern the temperature at which darkening commenced due to the dark colour of the sample, differential scanning calorimetry (DSC) was employed to further examine this apparent decomposition.
Using a Mettler Toledo FP900 Thermosystem with FP85 DTA/DSC measuring cell, in an air atmosphere at a heating rate of 5°C/minute, a DSC trace was obtained. Gradual, but significant, positive deviation from the baseline was evident from approximately 250°C, indicating decomposition.
Description of key information
Fe3P Was found to decompose from approximately 250°C without melting.
Key value for chemical safety assessment
Additional information
A melting point determination was performed as part of a set of tests for physico-chemical properties (Huntingdon Life Sciences, 2011, Study FGE0002). The melting point was determined according to OECD Method 102 and EC Method A1, and the study was conducted in compliance with GLP.
Fe3P was found to decompose from approximately 250°C without melting.
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