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EC number: 255-785-4 | CAS number: 42373-04-6
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:
- March 21, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 170 °C
- Executive summary:
The test item showed no melting up to 170 °C. The test item decomposed.
Reference
Three DSC measurements with a heating rate of 10 K/min in aluminium crucibles with a hole showed a multistage endothermal effect in the temperature range of 120 – 240 °C with no clear melting point (onset). The 1st endothermal effect in the temperature range occurred in the temperature range 130 – 150 °C. The 2nd endothermal effect in the temperature range 170 – 210 °C was attributed to decomposition. The test item showed no melting.
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 (melting) / °C |
Onset / °C |
Crucible |
Observations after the measurement |
36168 |
10.09 |
25 |
500 |
120 –240 |
Multi-stage |
Aluminium with a hole |
Test item was a black solid after the measure-ment: 62 % mass loss |
36170 |
9.99 |
25 |
150 |
130 – 150 |
Multi-stage |
Aluminium with a hole |
Test item was a red solid after the measure-ment: 4 % mass loss |
36172 |
8.72 |
25 |
250 |
130 - 210 |
Multi-stage |
Aluminium with a hole |
Test item was a black solid after the measure-ment: 26 % mass loss |
The test item showed no melting up to 170 °C. The test item decomposed.
Description of key information
The test item showed no melting up to 170 °C. The test item decomposed.
Key value for chemical safety assessment
Additional information
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