Registration Dossier
Registration Dossier
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EC number: 816-307-5 | CAS number: 45738-97-4
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31Oct2017 - 09Jan2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 3,7-dihydropurin-6-one;sodium
- Cas Number:
- 45738-97-4
- Molecular formula:
- C5H3N4NaO
- IUPAC Name:
- 3,7-dihydropurin-6-one;sodium
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Appearance: White powder
- Purity / Composition: 98%
- Test item storage: Room temperature
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Batch No.of test material: 16K235305
- Purity: 98.0%
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature
Results and discussion
Melting / freezing point
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- >= 150 °C
- Remarks on result:
- other:
- Remarks:
- Reaction and/or decomposition of the test item was observed during DSC experiment at temperatures of > 150°C (> 423K). Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no melting and/or boiling temperature.
Applicant's summary and conclusion
- Conclusions:
- The test item has no melting and/or boiling temperature.
- Executive summary:
The melting and boiling temperature of Sodium hypoxanthine were tested by differential scanning calorimetry (DSC). An endothermic effect was observed starting at 150°C. The endothermic effect was probably obtained due to reaction and/or decomposition of the test item. After the experiment, a brown expanded residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item.
Reaction and/or decomposition of the test item was observed during DSC experiment at temperatures of > 150°C (> 423K). Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no melting and/or boiling temperature.
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