Registration Dossier
Registration Dossier
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EC number: 219-706-7 | CAS number: 2503-56-2
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13 March 2017 to 11 April 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
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:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 5-methyl-s-triazolo[1,5-a]pyrimidin-7-ol
- EC Number:
- 219-706-7
- EC Name:
- 5-methyl-s-triazolo[1,5-a]pyrimidin-7-ol
- Cas Number:
- 2503-56-2
- Molecular formula:
- C6H6N4O
- IUPAC Name:
- 5-methyl-s-triazolo[1,5-a]pyrimidin-7-ol
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- 284.3 °C
- Atm. press.:
- ca. 101.325 Pa
- Decomposition:
- yes
- Remarks:
- during and after melting
- Decomp. temp.:
- >= 284 °C
- Remarks on result:
- other: an endothermic peak was observed in 2 independent experiments
- Remarks:
- this peak is indicative for melting/decomposition
Any other information on results incl. tables
At 284.3 °C a sharp endothermic peak was observed. At 298 °C the substance has turned into an orange coloured molten residue.
Applicant's summary and conclusion
- Conclusions:
- The melting/decomposition temperature of the substance is 284.3 °C
- Executive summary:
In a test using differential scanning calorimetry, the melting point of the substance was found to be 284.3 °C.
The substance melted and simultaneously reacted and/or decomposed during melting.
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