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EC number: 204-980-2 | CAS number: 130-20-1
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 05, 2015
- 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:
- thermal analysis
- Key result
- Melting / freezing pt.:
- > 470 °C
- Atm. press.:
- ca. 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- ca. 470 °C
- Remarks on result:
- not determinable
- Executive summary:
The test item showed no melting up to the temperature of 470 °C. Above 470 °C a decomposition started.
Reference
Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect in the temperature range of 470 – 490 °C, which was immediately followed by an exothermal effect. The results of the DSC measurements are summarized in Table1.
Table1: Melting point (DSC-measurements)
Ident No. |
Test item [mg] |
Final test temperature [°C] |
Type of effect |
Temperature range [°C] |
Onset [°C] |
Mass loss [%] |
34889 |
9.93 |
500 |
endothermal |
470 - 490 |
*) |
19 |
34888 |
6.38 |
500 |
endothermal |
470 - 490 |
*) |
19 |
Remark: *) Could not be estimated
After the measurements with the final test temperature of 500 °C the test item in the aluminium crucibles appeared unchanged. A mass loss of 19 % was detected.
The test item showed no melting within the measurement range of 25 - 470 °C. Above 470 °C an exothermal decomposition started, which was partly superposed by an endothermal effect, probably caused by setting free decomposition gases through the hole of the crucible.
Description of key information
The melting point / melting range of the test item was determined according to the
European Commission Regulation (EC) No. 440/2008, Method A.1. and
according to the OECD test guideline, OECD 102.
Key value for chemical safety assessment
Additional information
The test item showed no melting up to the temperature of 470 °C. Above 470 °C a decomposition started.
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