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EC number: 240-040-8 | CAS number: 15901-40-3
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:
- 2015-07-20
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- The study was conducted according to an appropriate OECD test guideline and under the quality standard of ISO 9001:2008
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 3016 Pour point
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- EC test guideline A.1 / 1.4.5 / 1.6.5 Pour point
- Principles of method if other than guideline:
- The pour point is the lowest temperature at which movement of the test substance is still observed. The valid temperature range of the pour point is 223 K (-50°C) to 323 K (+50°C) with an accuracy of ± 3.0 K.
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001:2008
- Type of method:
- pour point
- Key result
- Melting / freezing pt.:
- -24 °C
- Atm. press.:
- 1 013 hPa
- Decomposition:
- no
- Key result
- Melting / freezing pt.:
- 249.2 K
- Atm. press.:
- 1 013 hPa
- Decomposition:
- no
- Conclusions:
- The melting point according to EC test guideline A.1 / 1.4.5 / 1.6.5, ISO 3016 Pour point test was -24 °C.
- Executive summary:
The melting point according to EC test guideline A.1 / 1.4.5 / 1.6.5, ISO 3016 Pour point test was -24 °C.
Reference
Result:–24 °C, 249.2 K
Time [min] |
Sample Temperature[°C] |
Observations |
0 (start) |
25 |
clear liquid |
5 |
15 |
clear liquid |
10 |
10 |
clear liquid |
15 |
5 |
clear liquid |
20 |
0 |
clear liquid |
25 |
-5 |
clear liquid |
35 |
-10 |
clear liquid |
40 |
-15 |
clear liquid |
50 |
-20 |
slightly viscous |
55 |
-22.5 |
very much viscous |
60 |
-25 |
nearly solid |
70 |
-27 |
solid (no movement) |
Description of key information
Melting point: -24°C at 1013 hPa (ISO 3016)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -24 °C
Additional information
Two melting/freezing point studies were performed for the submission substance. In the study conducted using a Differential Scanning Calorimetry (DSC) method, no clear freezing/melting point was detected for the substance. In the second study using a pour point method in accordance with ISO 3016 Test method and in compliance with a known quality system (ISO 9001:2008), a freezing temperature of -24°C at 1013 hPa was determined for the submission substance. This result is considered to be reliable and is selected as key study.
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