Registration Dossier
Registration Dossier
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EC number: 429-530-4 | CAS number: 96662-24-7
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:
- 5 October to 13 November 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: Differential Scanning Calorimetry.
- Melting / freezing pt.:
- 157.4 °C
- Decomposition:
- yes
- Decomp. temp.:
- >= 180 - <= 350 °C
- Conclusions:
- Mean melting point is 157.4 °C
- Executive summary:
Study data conducted to Guideline 92/69/EEC of 31 July 1992, Annex. Part A: Methods for the determination of physico-chemical properties. A.1. melting point / melting range by differential scanning calorimetry (DSC) in accordance to GLP.The mean melting point is 157.4 °C with decomposition of the test substance in the range 180-350 °C, with a decomposition energy of 1243 J/g.
Reference
The determination of the melting point by DSC, Mettler-Toledo TA8000, were carried out in closed glass pan and in closed aluminium pan. The measurement in the closed glass pan shows an endothermic effect (melting) in the range 130-170 °C and a decomposition of the test substance in the range 180-350 °C, with a decomposition energy of 1243 J/g. So the test for explosive properties has to be performed. In the aluminium pan the diagram shows a broad endothermal effect in the range 115-170 °C.
Mean melting point is 157.4 °C.
Ident. No. |
onset temperature / °C |
3606* |
159.7 |
3607 |
156.8 |
3608 |
158.0 |
*glass
Description of key information
Mean melting point is 157.4 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 157.4 °C
Additional information
Study data conducted to Guideline 92/69/EEC of 31 July 1992, Annex. Part A: Methods for the determination of physico-chemical properties. A.1. melting point / melting range by differential scanning calorimetry (DSC) in accordance to GLP.The mean melting point is 157.4 °C with decomposition of the test substance in the range 180-350 °C, with a decomposition energy of 1243 J/g.
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