Registration Dossier
Registration Dossier
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EC number: 601-264-5 | CAS number: 113534-44-4
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- June 07, 2017 - June 08, 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- 3,7-bis(diethylamino)phenoxazin-5-ium nitrate
- EC Number:
- 277-539-5
- EC Name:
- 3,7-bis(diethylamino)phenoxazin-5-ium nitrate
- Cas Number:
- 73570-52-2
- Molecular formula:
- C20H26N3O.NO3
- IUPAC Name:
- 3,7-bis(diethylamino)phenoxazin-5-ium nitrate
- Test material form:
- solid
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- > 162 - < 164 °C
- Atm. press.:
- ca. 1 014 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 180 °C
Any other information on results incl. tables
Individual results
Melting point / melting range: DSC measurement
Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 140 – 180 °C. The onset temperature (see Table1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline.
Afterwards decomposition followed above 180 °C.
The results of the DSC measurements are summarized in Table 1.
Table1: Melting point (DSC measurements)
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range (endo-thermal) / °C |
Onset (melting) / °C |
Crucible |
Observations after the measurement |
36304 |
8.97 |
25 |
500 |
149– 180 |
163.70 |
Aluminium with a hole |
Test item was decomposed: mass loss 52 % |
36307 |
7.18 |
25 |
180 |
149– 180 |
161.96 |
Aluminium with a hole |
Test item was a melt: mass loss 4 % |
The test item had a melting range of 162 – 164 °C.
Applicant's summary and conclusion
- Executive summary:
The test item had a melting range of 162 – 164 °C. Above 180 °C decomposition followed.
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