Registration Dossier
Registration Dossier
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EC number: 268-761-3 | CAS number: 68139-30-0
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:
- 13 April, 2018 - 20 June, 2018.
- 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
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch: DSP-001.
Expiry date: 15 January 2019 . - Key result
- Atm. press.:
- >= 100 - <= 101 kPa
- Decomposition:
- yes
- Remarks:
- Partial volatilisation from approximately 252 °C (525 K) with subsequent decomposition from approximately 310 °C (583 K).
- Decomp. temp.:
- >= 310 °C
- Remarks on result:
- not determinable
- Remarks:
- No quantitative value for melting / freezing point could be determined.
- Conclusions:
- The test substance was determined to partially volatilise from approximately 252 °C (525 K) with subsequent decomposition from approximately 310 °C (583 K). As a result, no value for the melting point could be determined.
Reference
The several endothermic events occurring from approximately 252 °C were considered to be due to volatilisation of some of the components of the test item. Up to 310 °C this may have included some decomposition as the residue was dark brown in colour; certainly after this temperature the test item decomposed as any residue was now black. From considering the appearances of the residues, it was evident that the test item did not melt prior to volatilisation and decomposition.
Description of key information
The test substance was determined to partially volatilise from approximately 252 °C (525 °K) with subsequent decomposition from approximately 310 °C (583 °K). As a result, no value for the melting point could be determined.
Key value for chemical safety assessment
Additional information
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